Interaction Checker

Fosamprenavir interactions

Fosamprenavir (Lexiva), an antiretroviral has 535 documented interactions across the FDA labels and fact sheets we index: 308 major, 204 moderate, 22 minor, and 1 where a label reports no significant interaction. Each entry below quotes the sentence behind it. This drug page is a starting point, not a verdict for your situation.

Interactions from the label

Major interactions (308)

  • AcalabrutinibMajor

    • CYP3A Inhibitors: Avoid co-administration with strong CYP3A inhibitors. (Acalabrutinib label, Drug interactions)

  • Acetaminophen and codeineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • AdefovirantiviralMajor

    Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported with the use of nucleoside analogs alone or in combination with other antiretrovirals [See Warnings and Precautions (5. (Adefovir label, Boxed warning)

  • AdenosineantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Albuterolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • Alfuzosinalpha blockerMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • AlmotriptantriptanMajor

    Concomitant use of almotriptan tablets and potent CYP3A4 inhibitors should be avoided in patients with renal or hepatic impairment [see Clinical Pharmacology ( 12.3 )] . (Almotriptan label, Drug interactions)

  • AlprazolambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • AmiodaroneantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Amitriptylinetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Amoxapinetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ApixabananticoagulantMajor

    For patients receiving ELIQUIS at a dose of 2.5 mg twice daily, avoid coadministration with combined P-gp and strong CYP3A4 inhibitors [see Dosage and Administration (2.6) and Clinical Pharmacology (12.3) ] . (Apixaban label, Drug interactions)

  • Arformoterolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • AripiprazoleantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • AsenapineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • AtazanavirantiretroviralMajor

    Others ↑ other protease inhibitor Coadministration with other protease inhibitors is not recommended. (Atazanavir label, Drug interactions)

  • AvanafilPDE5 inhibitorMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • AzelastineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Azelastine and fluticasoneantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Baclofenmuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • BeclomethasonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Belladonna and opiumopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • BetamethasonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Bictegravir, emtricitabine, and tenofovir alafenamideantiretroviralMajor

    Because BIXLENVO is a complete regimen, coadministration with other antiretroviral medications for the treatment of HIV-1 infection is not recommended ( 7.1 ) (Bictegravir, emtricitabine, and tenofovir alafenamide label, Drug interactions)

  • BosentanCYP3A4 inducerMajor

    Co-administration of such combinations of a CYP2C9 inhibitor plus a strong or moderate CYP3A inhibitor with TRACLEER is not recommended. (Bosentan label, Drug interactions)

  • BosutinibMajor

    • Strong and Moderate CYP3A Inhibitors: Avoid concomitant use with BOSULIF. (Bosutinib label, Drug interactions)

  • BrexpiprazoleantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • BrivaracetamanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Bromocriptinedopamine agonistMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Brompheniramine, pseudoephedrine, and dextromethorphanantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • BudesonidecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Budesonide and formoterolcorticosteroidMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • BuprenorphineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Buprenorphine and naloxoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Butalbital and acetaminophenbarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Butalbital, acetaminophen, and caffeinebarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Butalbital, acetaminophen, caffeine, and codeinebarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Butalbital, aspirin, and caffeinebarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Butalbital, aspirin, caffeine, and codeinebarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ButorphanolopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Cabergolinedopamine agonistMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • CabotegravirantiretroviralMajor

    Coadministration with other antiretroviral medications for PrEP is not recommended. (Cabotegravir label, Drug interactions)

  • CabozantinibMajor

    Avoid taking a strong CYP3A4 inhibitor (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole) while taking COMETRIQ or reduce the dosage of COMETRIQ if concomitant use with strong CYP3A4 inhibitors cannot be avoided [see Dosage and Administration ( 2.2 ), Clinical Pharmacology… (Cabozantinib label, Drug interactions)

  • Cannabidiol (prescription)anticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CarbamazepineanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CarbinoxamineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CariprazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Carisoprodolmuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CenobamateanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ChlordiazepoxidebenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Chlordiazepoxide and clidiniumbenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ChlorpheniramineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ChlorpromazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Chlorzoxazonemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CiclesonidecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • CladribineantimetaboliteMajor

    Antiviral and antiretroviral drugs: Avoid concomitant use. (Cladribine label, Drug interactions)

  • Clarithromycinmacrolide antibioticMajor

    Doses of clarithromycin greater than 1000 mg per day should not be co-administered with protease inhibitors. (Clarithromycin label, Drug interactions)

  • ClemastineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ClobazambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ClobetasolcorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Clomipraminetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ClonazepambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Clonidinealpha-adrenergic agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ClorazepatebenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ClozapineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • CodeineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ColchicineMajor

    Patients with renal or hepatic impairment should not be given colchicine capsules with drugs that inhibit both P-glycoprotein and CYP3A4 inhibitors [see Drug Interactions (7) ] . (Colchicine label, Contraindications)

  • Cyclobenzaprinemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • CyproheptadineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Dantrolenemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Daridorexantsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Darunavir and cobicistatantiretroviralMajor

    PREZCOBIX or PREZCOBIX PED is not recommended in combination with other antiretroviral drugs that require pharmacokinetic boosting. (Darunavir and cobicistat label, Warnings and precautions)

  • DasatinibMajor

    Avoid concomitant use of strong CYP3A4 inhibitors. (Dasatinib label, Drug interactions)

  • DeflazacortcorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Desfluranegeneral anestheticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Desipraminetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DesonidecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • DexamethasonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • DexchlorpheniramineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Dexmedetomidinealpha-adrenergic agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Dextromethorphan and quinidineserotonergic drugMajor

    QT Prolongation: Monitor ECG if concomitant use of drugs that prolong QT interval cannot be avoided or if concomitant CYP3A4 inhibitors used. (Dextromethorphan and quinidine label, Warnings and precautions)

  • DiazepambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Digoxindigitalis glycosideMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Dihydroergotamineergot alkaloidMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Diltiazemcalcium channel blockerMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • DimenhydrinateantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DiphenhydramineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DisopyramideantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Divalproex (valproate)anticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DocetaxelMajor

    Concomitant use of Docetaxel Injection and drugs that inhibit CYP3A4 may increase exposure to docetaxel and should be avoided. (Docetaxel label, Drug interactions)

  • DofetilideantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Doxepintricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DoxorubicinMajor

    Avoid concomitant use of Doxorubicin Hydrochloride Injection with inhibitors of CYP3A4, CYP2D6, or P-gp. (Doxorubicin label, Drug interactions)

  • DoxylamineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Doxylamine and pyridoxineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DronabinolcannabinoidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • DronedaroneantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Droperidoldopamine antagonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Dutasteride and tamsulosin5-alpha reductase inhibitorMajor

    Drug-Drug Interactions Strong Inhibitors of Cytochrome P450 (CYP) 3A4 Tamsulosin-containing products, including JALYN, should not be coadministered with strong CYP3A4 inhibitors (e.g., ketoconazole) as this can significantly increase tamsulosin exposure [see Drug Interactions (7.1) , Clinical Pharmacology (12.3) ]. (Dutasteride and tamsulosin label, Warnings and precautions)

  • EfavirenzantiretroviralMajor

    Protease inhibitor: Lopinavir/ritonavir ↓ lopinavir * Lopinavir/ritonavir once daily dosing is not recommended when coadministered with efavirenz. (Efavirenz label, Drug interactions)

  • Efavirenz, lamivudine, and tenofovirantiretroviralMajor

    Lactic Acidosis and Severe Hepatomegaly with Steatosis Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported with the use of nucleoside analogs and other antiretrovirals. (Efavirenz, lamivudine, and tenofovir label, Warnings and precautions)

  • EletriptantriptanMajor

    • Recent use (i.e., within at least 72 hours) of the following potent CYP3A4 inhibitors: ketoconazole, itraconazole, nefazodone, troleandomycin, clarithromycin, ritonavir, or nelfinavir [see Drug Interactions (7.2) and Clinical Pharmacology (12.3) ]. (Eletriptan label, Contraindications)

  • Elvitegravir, cobicistat, emtricitabine, and tenofovirantiretroviralMajor

    GENVOYA should not be administered with other antiretroviral medications for treatment of HIV-1 infection. (Elvitegravir, cobicistat, emtricitabine, and tenofovir label, Drug interactions)

  • EmtricitabineantiretroviralMajor

    Lactic Acidosis/Severe Hepatomegaly with Steatosis Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported with the use of nucleoside analogs, including FTC, alone or in combination with other antiretrovirals. (Emtricitabine label, Warnings and precautions)

  • Emtricitabine and tenofovirantiretroviralMajor

    Drug Interactions Concomitant Drug Class: Drug Name Effect on Concentration ↓=Decrease Clinical Comment ↑= Increase Antiretroviral Agents: Protease Inhibitors (PI) tipranavir/ritonavir ↓ TAF Coadministration with DESCOVY is not recommended. atazanavir/cobicistat ↑ TAF Coadministration with DESCOVY in pediatric patients weighing 14 to < 35 kg is not recommended… (Emtricitabine and tenofovir label, Drug interactions)

  • Emtricitabine, rilpivirine, and tenofovirantiretroviralMajor

    COMPLERA is a complete regimen for the treatment of HIV-1 infection; therefore, coadministration with other antiretroviral medications for treatment of HIV-1 infection is not recommended. (Emtricitabine, rilpivirine, and tenofovir label, Drug interactions)

  • EntecavirantiviralMajor

    Therapy with BARACLUDE is not recommended for HIV/HBV co-infected patients who are not also receiving highly active antiretroviral therapy (HAART) [see Warnings and Precautions (5.2) ] . (Entecavir label, Boxed warning)

  • EpinephrinesympathomimeticMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • Eplerenonealdosterone antagonistMajor

    …Patients Eplerenone is contraindicated in all patients with: • serum potassium > 5.5 mEq/L at initiation, • creatinine clearance ≤ 30 mL/min, or • concomitant administration of strong CYP3A inhibitors (e.g., ketoconazole, itraconazole, nefazodone, troleandomycin, clarithromycin, ritonavir, and nelfinavir) [see Drug Interactions (7.1) , Clinical Pharmacology (12.3)… (Eplerenone label, Contraindications)

  • Ergotamine and caffeineergot alkaloidMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • ErlotinibMajor

    Avoid co-administering erlotinib with strong CYP3A4 inhibitors (e.g., boceprevir, clarithromycin, conivaptan, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telithromycin, voriconazole, grapefruit or grapefruit juice) or a combined CYP3A4 and CYP1A2 inhibitor (e.g., ciprofloxacin). (Erlotinib label, Drug interactions)

  • EslicarbazepineanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Esmololbeta blockerMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Esomeprazoleproton pump inhibitorMajor

    Fosamprenavir calcium/ritonavir: ↔ Amprenavir ↔ Esomeprazole Sedative/hypnotics: Midazolam, triazolam ↑Midazolam ↑Triazolam Coadministration is contraindicated due to potential for serious and/or life-threatening reactions such as prolonged or increased sedation or respiratory depression [see Contraindications (4)]. (Fosamprenavir label, Drug interactions)

  • EstazolambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Eszopiclonesedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • EthosuximideanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Etomidategeneral anestheticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • EtravirineantiretroviralMajor

    …unknown Co-administration of Etravirine with darunavir/cobicistat is not recommended because it may result in loss of therapeutic effect and development of resistance to darunavir. fosamprenavir (without ritonavir) ↑ amprenavir Concomitant use of Etravirine with fosamprenavir without low-dose ritonavir may cause a significant alteration in the plasma concentration… (Etravirine label, Drug interactions)

  • Ezetimibe and simvastatinstatinMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • FelbamateanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • FentanylopioidMajor

    Careful monitoring of therapeutic effects and adverse effects of fentanyl (including potentially fatal respiratory depression) is recommended. (Fosamprenavir label, Drug interactions)

  • FesoterodineanticholinergicMajor

    CYP3A4 Inhibitors Doses of Toviaz greater than 4 mg are not recommended in adult patients taking strong CYP3A4 inhibitors, such as ketoconazole, itraconazole, and clarithromycin [see Dosage and Administration (2.5) ]. (Fesoterodine label, Drug interactions)

  • FlecainideantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • FlibanserinCNS depressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • FludrocortisonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • FlumazenilbenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • FlunisolidecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • FluocinonidecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • FluphenazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • FluticasonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Fluticasone and salmeterolcorticosteroidMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • Formoterolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • FosphenytoinanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • GabapentinanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Guanfacinealpha-adrenergic agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • HalobetasolcorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • HaloperidolantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • HydrocodoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Hydrocodone and acetaminophenopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Hydrocodone and chlorpheniramineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Hydrocodone and homatropineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Hydrocodone and ibuprofenopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • HydrocortisonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • HydromorphoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • HydroxyureaantimetaboliteMajor

    Increased Toxicity with Concomitant Use of Antiretroviral Drugs Pancreatitis Pancreatitis (including fatal cases) have occurred in patients with HIV infection during therapy with hydroxyurea and didanosine, with or without stavudine. (Hydroxyurea label, Drug interactions)

  • HydroxyzineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Ibuprofen and famotidineNSAIDMajor

    Intervention Concomitant administration of ibuprofen and famotidine tablet is not recommended with dasatinib, delavirdine mesylate, cefditoren, and fosamprenavir. (Ibuprofen and famotidine label, Drug interactions)

  • IbutilideantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • IloperidoneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Imipraminetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Ipratropium and albuterolanticholinergicMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • IrinotecanMajor

    • Strong CYP3A4 Inhibitors: Do not administer strong CYP3A4 inhibitors with CAMPTOSAR. (Irinotecan label, Drug interactions)

  • Isofluranegeneral anestheticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Isoproterenolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • Itraconazoleazole antifungalMajor

    Fosamprenavir calcium/ritonavir: High doses of ketoconazole or itraconazole (greater than 200 mg/day) are not recommended. (Fosamprenavir label, Drug interactions)

  • IvabradineMajor

    …bradycardia [see Warnings and Precautions ( 5.3 )] • Severe hepatic impairment [see Use in Specific Populations ( 8.6 )] • Pacemaker dependence (heart rate maintained exclusively by the pacemaker) [see Drug Interactions ( 7.3 )] • Concomitant use of strong cytochrome P450 3A4 (CYP3A4) inhibitors [see Drug Interactions ( 7.1 )] Acute decompensated heart failure ( 4 ) (Ivabradine label, Contraindications)

  • KetamineCNS depressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Ketoconazoleazole antifungalMajor

    Fosamprenavir calcium/ritonavir: High doses of ketoconazole or itraconazole (greater than 200 mg/day) are not recommended. (Fosamprenavir label, Drug interactions)

  • LacosamideanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • LapatinibP-glycoprotein inhibitorMajor

    Avoid strong CYP3A4 inhibitors. (Lapatinib label, Drug interactions)

  • LarotrectinibMajor

    Strong CYP3A4 Inhibitors: Avoid coadministration of strong CYP3A4 inhibitors with VITRAKVI. (Larotrectinib label, Drug interactions)

  • Ledipasvir and sofosbuvirantiviralMajor

    Consider alternative HCV or antiretroviral therapy to avoid increases in tenofovir exposures. (Ledipasvir and sofosbuvir label, Drug interactions)

  • Lemborexantsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Levalbuterolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • LevetiracetamanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • LevorphanolopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Lidocainelocal anestheticMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Lidocaine and prilocainelocal anestheticMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Lofexidinealpha-adrenergic agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • LomitapideMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • Lopinavir and ritonavirantiretroviralMajor

    The list of contraindicated drugs applies to the use of fosamprenavir calcium with or without ritonavir, unless otherwise indicated. (Fosamprenavir label, Contraindications)

  • LorazepambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • LorlatinibCYP3A4 inducerMajor

    • Strong CYP3A Inhibitors : Avoid concomitant use; reduce LORBRENA dose if concomitant use cannot be avoided. (Lorlatinib label, Drug interactions)

  • LovastatinstatinMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • LoxapineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • LumateperoneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • LurasidoneantipsychoticMajor

    Fosamprenavir calcium /ritonavir: Use of lurasidone is contraindicated due to potential for serious and/or life-threatening reactions [see Contraindications (4)] . (Fosamprenavir label, Drug interactions)

  • MacitentanMajor

    Strong CYP3A4 inhibitors (ketoconazole, ritonavir) increase exposure to macitentan: avoid co-administration with OPSUMIT ( 7.2 , 12.3 ) . (Macitentan label, Drug interactions)

  • MaravirocantiretroviralMajor

    SELZENTRY is contraindicated in patients with severe renal impairment or ESRD (creatinine clearance [CrCl] less than 30 mL per minute) who are concomitantly taking potent CYP3A inhibitors or inducers [see Warnings and Precautions ( 5.3 )]. (Maraviroc label, Contraindications)

  • MeclizineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MeperidineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MeprobamateCNS depressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Metaxalonemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MethadoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Methocarbamolmuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MethohexitalbarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MethsuximideanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Methylergonovineergot alkaloidMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • MethylprednisolonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Metoclopramidedopamine antagonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MexiletineantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • MidazolambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Mirabegronbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • MirtazapineantidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • MitapivatCYP3A4 inducerMajor

    Strong CYP3A Inhibitors and Inducers: Avoid concomitant use. (Mitapivat label, Drug interactions)

  • MometasonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • MorphineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • NalbuphineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Naloxegolopioid antagonistMajor

    Patients concomitantly using strong CYP3A4 inhibitors (e.g., clarithromycin, ketoconazole) because these medications can significantly increase exposure to naloxegol which may precipitate opioid withdrawal symptoms such as hyperhidrosis, chills, diarrhea, abdominal pain, anxiety, irritability, and yawning [see Drug Interactions (7.1) and Clinical Pharmacology… (Naloxegol label, Contraindications)

  • Naproxen and esomeprazoleNSAIDMajor

    Fosamprenavir calcium/ritonavir: ↔ Amprenavir ↔ Esomeprazole Sedative/hypnotics: Midazolam, triazolam ↑Midazolam ↑Triazolam Coadministration is contraindicated due to potential for serious and/or life-threatening reactions such as prolonged or increased sedation or respiratory depression [see Contraindications (4)]. (Fosamprenavir label, Drug interactions)

  • NevirapineantiretroviralMajor

    Non-nucleoside reverse transcriptase inhibitor: Nevirapine a Fosamprenavir calcium: ↓ Amprenavir ↑ Nevirapine Coadministration of nevirapine and fosamprenavir calcium without ritonavir is not recommended. (Fosamprenavir label, Drug interactions)

  • NilotinibQT-prolonging drugMajor

    Avoid use of concomitant drugs known to prolong the QT interval and strong CYP3A4 inhibitors [see Drug Interactions ( 7.1 , 7.2 )] . (Nilotinib label, Boxed warning)

  • Nimodipinedihydropyridine calcium channel blockerMajor

    Therefore, the concomitant administration of NYMALIZE and strong CYP3A4 inhibitors should generally be avoided [ see Warnings and Precautions (5.3) ]. (Nimodipine label, Drug interactions)

  • Nirmatrelvir and ritonavirantiviralMajor

    The list of contraindicated drugs applies to the use of fosamprenavir calcium with or without ritonavir, unless otherwise indicated. (Fosamprenavir label, Contraindications)

  • Nisoldipinedihydropyridine calcium channel blockerMajor

    CYP3A4 inhibitors and inducers : SULAR is substrate of CYP3A4 and coadministration of SULAR with any known inducer or inhibitor of CYP3A4 should be avoided in general. (Nisoldipine label, Drug interactions)

  • Nortriptylinetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • OlanzapineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Olanzapine and fluoxetineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • OliceridineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Olopatadine and mometasoneantihistamineMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • Orphenadrinemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Orphenadrine, aspirin, and caffeinemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • OxazepambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • OxcarbazepineanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • OxycodoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Oxycodone and acetaminophenopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • OxymorphoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PaliperidoneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • PazopanibMajor

    Strong CYP3A4 Inhibitors : Avoid coadministration of VOTRIENT with strong CYP3A4 inhibitors. (Pazopanib label, Drug interactions)

  • Pentazocine and naloxoneopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PerampanelanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PerphenazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • PhenobarbitalbarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Phenobarbital, hyoscyamine, atropine, and scopolaminebarbiturateMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Phentermine and topiramateCNS stimulantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PhenytoinanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PimavanserinantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • PimozideantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Pramipexoledopamine agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PrednisolonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • PrednisonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • PregabalinanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PrimidoneanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ProcainamideantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • ProchlorperazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • PromethazineantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Promethazine and codeineopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Promethazine and dextromethorphanantihistamineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • PropafenoneantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • PropofolCNS depressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Protriptylinetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • QuetiapineantipsychoticMajor

    Fosamprenavir calcium /ritonavir: Initiation of fosamprenavir calcium with ritonavir in patients taking quetiapine : Consider alternative antiretroviral therapy to avoid increases in quetiapine drug exposures. (Fosamprenavir label, Drug interactions)

  • QuinidineantiarrhythmicMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Ramelteonsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • RemifentanilopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • RifabutinantibioticMajor

    Therefore, co-administration with antiretroviral and anti-HCV drugs metabolized by CYP3A is not recommended or there may be a need to increase the dose of antiretroviral or anti-HCV drugs (see PRECAUTIONS-Drug Interactions ). (Rifabutin label, Warnings)

  • RifampinantibioticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product:… (Fosamprenavir label, Contraindications)

  • RimegepantMajor

    • Strong CYP3A4 Inhibitors: Avoid concomitant administration. (Rimegepant label, Drug interactions)

  • RisperidoneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • RitonavirantiretroviralMajor

    The list of contraindicated drugs applies to the use of fosamprenavir calcium with or without ritonavir, unless otherwise indicated. (Fosamprenavir label, Contraindications)

  • RivaroxabananticoagulantMajor

    Use with P-gp and Strong CYP3A Inhibitors or Inducers Avoid concomitant use of XARELTO with known combined P-gp and strong CYP3A inhibitors [see Drug Interactions (7.2) ] . (Rivaroxaban label, Warnings and precautions)

  • Ropiniroledopamine agonistMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • RufinamideanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Salmeterolbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • ScopolamineanticholinergicMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Sevofluranegeneral anestheticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • SildenafilPDE5 inhibitorMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • Silodosinalpha blockerMajor

    Severe renal impairment (CCr < 30 mL/min) Severe hepatic impairment (Child-Pugh score ≥ 10) Concomitant administration with strong Cytochrome P450 3A4 (CYP3A4) inhibitors (e.g., ketoconazole, clarithromycin, itraconazole, ritonavir) [see DRUG INTERACTIONS (7.1) ] Patients with a history of hypersensitivity to silodosin or any of the ingredients in silodosin capsules… (Silodosin label, Contraindications)

  • SimvastatinstatinMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • SirolimusimmunosuppressantMajor

    Interaction with Strong Inhibitors and Inducers of CYP3A4 and/or P-gp Avoid concomitant use of sirolimus with strong inhibitors of CYP3A4 and/or P-gp (such as ketoconazole, voriconazole, itraconazole, erythromycin, telithromycin, or clarithromycin) or strong inducers of CYP3A4 and/or P-gp (such as rifampin or rifabutin) [ see Drug Interactions (7.2) ]. (Sirolimus label, Warnings and precautions)

  • Sodium oxybateCNS depressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Sofosbuvir and velpatasvirantiviralMajor

    Risk of Hepatic Decompensation/Failure in Patients with Evidence of Advanced Liver Disease Postmarketing cases of hepatic decompensation/failure, including those with fatal outcomes, have been reported in patients treated with HCV NS3/4A protease inhibitor-containing regimens, including treatment with VOSEVI. (Sofosbuvir and velpatasvir label, Warnings and precautions)

  • SolifenacinanticholinergicMajor

    The dosage of Solifenacin succinate tablets greater than 5 mg once daily is not recommended when concomitantly used with strong CYP3A4 inhibitors [see Dosage and Administration ( 2.4 )] . (Solifenacin label, Drug interactions)

  • Sotalolbeta blockerMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • St. John's wortHerbal and supplementMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • Suvorexantsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • SuzetrigineCYP3A4 inducerMajor

    Concomitant use of JOURNAVX with strong CYP3A inhibitors is contraindicated [see Warnings and Precautions (5.1) , Drug Interactions (7.1) ] . (Suzetrigine label, Contraindications)

  • TadalafilPDE5 inhibitorMajor

    Coadministration of fosamprenavir calcium in patients on ADCIRCA: Avoid use of ADCIRCA during the initiation of fosamprenavir calcium. (Fosamprenavir label, Drug interactions)

  • Tamsulosinalpha blockerMajor

    • Should not be used in combination with strong inhibitors of CYP3A4. (Tamsulosin label, Warnings and precautions)

  • TapentadolopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Tasimelteonsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TemazepambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TenofovirantiretroviralMajor

    Lactic Acidosis/Severe Hepatomegaly with Steatosis Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported with the use of nucleoside analogs, including TDF, alone or in combination with other antiretrovirals. (Tenofovir label, Warnings and precautions)

  • Terbutalinebeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • TetrabenazineVMAT2 inhibitorMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ThioridazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • ThiotepaMajor

    Avoid co-administration of strong CYP3A4 inhibitors (e.g., itraconazole, clarithromycin, ritonavir) and strong CYP3A4 inducers (e.g., rifampin, phenytoin) with TEPADINA due to the potential effects on efficacy and toxicity [see Clinical Pharmacology ( 12.3 ) ] . (Thiotepa label, Drug interactions)

  • ThiothixeneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • TiagabineanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Tizanidinemuscle relaxantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TolvaptanMajor

    …dominant polycystic kidney disease (ADPKD) outside of FDA-approved REMS [see Warnings and Precautions (5.2) ] Unable to sense or respond to thirst Hypovolemic hyponatremia Taking strong CYP3A inhibitors [see Warnings and Precautions (5.5) ] Anuria Hypersensitivity (e.g., anaphylactic shock, rash generalized) to tolvaptan or any components of the product [see Adverse… (Tolvaptan label, Contraindications)

  • TopiramateanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Toremifeneselective estrogen receptor modulatorMajor

    Drugs known to prolong the QT interval and strong CYP3A4 inhibitors should be avoided [see Warnings and Precautions (5.1) ] . (Toremifene label, Boxed warning)

  • TrabectedinMajor

    CYP3A inhibitors: Avoid concomitant strong CYP3A inhibitors ( 7.1 ) (Trabectedin label, Drug interactions)

  • TramadolopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • Tramadol and acetaminophenopioidMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TrazodoneantidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TretinoinretinoidMajor

    • Strong CYP3A Inhibitors and Inducers: Avoid coadministration with strong CYP3A inhibitors and inducers. (Tretinoin label, Drug interactions)

  • TriamcinolonecorticosteroidMajor

    Coadministration of fluticasone and fosamprenavir calcium/ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects. (Fosamprenavir label, Drug interactions)

  • TriazolambenzodiazepineMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • TrifluoperazineantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Trimipraminetricyclic antidepressantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • UbrogepantMajor

    UBRELVY is contraindicated: With concomitant use of strong CYP3A4 inhibitors [see Drug Interactions ( 7.1 )] In patients with a history of serious hypersensitivity to ubrogepant or any component of UBRELVY. (Ubrogepant label, Contraindications)

  • Umeclidinium and vilanterolanticholinergicMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • UpadacitinibimmunosuppressantMajor

    For patients with atopic dermatitis, coadministration of RINVOQ 30 mg once daily with strong CYP3A4 inhibitors is not recommended. (Upadacitinib label, Drug interactions)

  • Valproic acidanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • VardenafilPDE5 inhibitorMajor

    John’s wort ( Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson… (Fosamprenavir label, Contraindications)

  • VepdegestrantMajor

    Avoid concomitant use of VEPPANU with strong CYP3A inhibitors or drugs known to prolong the QTc interval. (Vepdegestrant label, Warnings and precautions)

  • Verapamilcalcium channel blockerMajor

    Fosamprenavir calcium is contraindicated when coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine… (Fosamprenavir label, Contraindications)

  • Vibegronbeta-adrenergic agonistMajor

    Inhaled beta-agonist: Salmeterol ↑ Salmeterol Concurrent administration of salmeterol with fosamprenavir calcium is not recommended. (Fosamprenavir label, Drug interactions)

  • VigabatrinanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • VincristineMajor

    Therefore, the concomitant use of strong CYP3A inhibitors with vincristine sulfate should be avoided. (Vincristine label, Drug interactions)

  • Zaleplonsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ZidovudineantiretroviralMajor

    Lactic acidosis and severe hepatomegaly with steatosis, including fatal cases, have been reported with the use of nucleoside analogues alone or in combination, including zidovudine and other antiretrovirals. (Zidovudine label, Boxed warning)

  • ZiprasidoneantipsychoticMajor

    …coadministered with the following drugs: Alpha 1-adrenoreceptor antagonist: Alfuzosin Antiarrhythmics: Flecainide (with ritonavir ), propafenone (with ritonavir ) Antimycobacterial: Rifampin Antipsychotic: Lurasidone (with ritonavir ), pimozide Ergot derivatives: Dihydroergotamine, ergonovine, ergotamine, methylergonovine GI motility agent: Cisapride Herbal product: St. (Fosamprenavir label, Contraindications)

  • Zolpidemsedative-hypnoticMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • ZonisamideanticonvulsantMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

Moderate interactions (204)

  • AbataceptimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • AbrocitinibJAK inhibitorModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • AcarboseantidiabeticModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Acetazolamidecarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • AdalimumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • AlemtuzumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • AlogliptinDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Alogliptin and metforminDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • AlosetronModerate

    CYP3A4 inhibitors: Use with caution in combination due to increased exposure of alosetron. (Alosetron label, Drug interactions)

  • Amlodipinedihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Amlodipine and atorvastatindihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Amlodipine and benazeprildihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Amlodipine and olmesartandihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Amlodipine and valsartandihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Antacids (Tums, Maalox, Mylanta)OTC productModerate

    Antacid: MAALOX TC ↓Amprenavir Use with caution when administered at the same time. (Fosamprenavir label, Drug interactions)

  • AprepitantCYP3A4 inhibitorModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • ArmodafinilCNS stimulantModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • AtorvastatinstatinModerate

    Lipid Modifying Agents: HMG-CoA reductase inhibitors : Atorvastatin a Lovastatin, simvastatin Other lipid modifying agents : Lomitapide ↑Atorvastatin ↑Lovastatin ↑Simvastatin ↑Lomitapide Titrate atorvastatin dose carefully and use the lowest necessary dose; do not exceed atorvastatin 20 mg/day. (Fosamprenavir label, Drug interactions)

  • AxitinibModerate

    CYP3A4/5 Inhibitors Co-administration of ketoconazole, a strong inhibitor of CYP3A4/5, increased the plasma exposure of axitinib in healthy volunteers. (Axitinib label, Drug interactions)

  • AzathioprineimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • BaricitinibJAK inhibitorModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • BexagliflozinSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • BortezomibModerate

    Strong CYP3A4 Inhibitors: Closely monitor patients with concomitant use. (Bortezomib label, Drug interactions)

  • BrincidofovirantiviralModerate

    …1B3 Concomitant use of TEMBEXA with OATP1B1 and 1B3 inhibitors (clarithromycin, cyclosporine, erythromycin, gemfibrozil, human immunodeficiency virus [HIV] and hepatitis C virus [HCV] protease inhibitors, rifampin [single dose]) increase brincidofovir AUC and C max which may increase TEMBEXA-associated adverse reactions [see Clinical Pharmacology ( 12.3 )] . (Brincidofovir label, Drug interactions)

  • Brinzolamidecarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • BupropionantidepressantModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Buspironeserotonergic drugModerate

    Other inhibitors and inducers of CYP3A4: Substances that inhibit CYP3A4, such as ketoconazole or ritonavir, may inhibit buspirone metabolism and increase plasma concentrations of buspirone while substances that induce CYP3A4, such as dexamethasone or certain anticonvulsants (phenytoin, phenobarbital, carbamazepine), may increase the rate of buspirone metabolism. (Buspirone label, Drug interactions)

  • CanagliflozinSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Cilostazolantiplatelet agentModerate

    Inhibitors of CYP3A4 or CYP2C19 Inhibitors of CYP3A4 Coadministration of strong (e.g., ketoconazole) and moderate (e.g., erythromycin, diltiazem and grapefruit juice) CYP3A4 inhibitors can increase exposure to cilostazol. (Cilostazol label, Drug interactions)

  • CimetidineH2 blockerModerate

    Histamine H 2 -receptor antagonists: Cimetidine, famotidine, nizatidine, ranitidine a Fosamprenavir calcium: ↓ Amprenavir Fosamprenavir calcium/ritonavir: Interaction not evaluated Use with caution. (Fosamprenavir label, Drug interactions)

  • CinacalcetCYP2D6 inhibitorModerate

    Co-administration with a strong CYP3A4 inhibitor may increase serum levels of cinacalcet. (Cinacalcet label, Drug interactions)

  • CitalopramSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • ClindamycinantibioticModerate

    Inhibitors of CYP3A4 and CYP3A5 Inhibitors of CYP3A4 and/or CYP3A5 may increase plasma concentrations of clindamycin [ see Clinical Pharmacology (12.3) ]. (Clindamycin label, Drug interactions)

  • Clotrimazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • Conjugated estrogensestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Conjugated estrogens and bazedoxifeneestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • CyclophosphamideimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • CyclosporineimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • DapagliflozinSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Dapagliflozin and metforminSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • DarifenacinanticholinergicModerate

    CYP3A4 Inhibitors The systemic exposure of darifenacin from darifenacin extended-release tablets is increased in the presence of CYP3A4 inhibitors. (Darifenacin label, Drug interactions)

  • DarunavirantiretroviralModerate

    Co-administration of darunavir and ritonavir and other drugs that inhibit CYP3A, or P-gp may decrease the clearance of darunavir and ritonavir and may result in increased plasma concentrations of darunavir and ritonavir (see Table 10 ). (Darunavir label, Drug interactions)

  • Deferasiroxiron supplementModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • Desogestrel and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • DesvenlafaxineSNRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Dexlansoprazoleproton pump inhibitorModerate

    Proton pump inhibitors: Esomeprazole a , lansoprazole, omeprazole, pantoprazole, rabeprazole Fosamprenavir calcium: ↔ Amprenavir ↑ Esomeprazole Proton pump inhibitors can be administered at the same time as a dose of fosamprenavir calcium with no change in plasma amprenavir concentrations. (Fosamprenavir label, Drug interactions)

  • Dichlorphenamidecarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • Dimethyl fumarateimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • DolutegravirantiretroviralModerate

    HIV integrase inhibitor: Dolutegravir a Fosamprenavir calcium /ritonavir: ↓Dolutegravir The recommended dose of dolutegravir is 50 mg twice daily when coadministered with Fosamprenavircalcium /ritonavir. (Fosamprenavir label, Drug interactions)

  • DoravirineantiretroviralModerate

    Co-administration of PIFELTRO and drugs that are inhibitors of CYP3A may result in increased plasma concentrations of doravirine. (Doravirine label, Drug interactions)

  • Dorzolamidecarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • Dorzolamide and timololcarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • Doxazosinalpha blockerModerate

    Strong cytochrome P450 (CYP) 3A inhibitors may increase exposure to doxazosin and increased risk of hypotension. (Doxazosin label, Drug interactions)

  • Drospirenone and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • DulaglutideGLP-1 receptor agonistModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • DuloxetineSNRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Econazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • Elexacaftor, tezacaftor, and ivacaftorModerate

    Concomitant Use with CYP3A Inhibitors Exposure to elexacaftor, tezacaftor and ivacaftor are increased when used concomitantly with strong or moderate CYP3A inhibitors. (Elexacaftor, tezacaftor, and ivacaftor label, Warnings and precautions)

  • EluxadolineopioidModerate

    Narcotic analgesic: Methadone Fentanyl ↓ Methadone ↑Fentanyl Data suggest that the interaction is not clinically relevant; however, patients should be monitored for opiate withdrawal symptoms. (Fosamprenavir label, Drug interactions)

  • EmpagliflozinSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Empagliflozin and metforminSGLT2 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • EscitalopramSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Esterified estrogens and methyltestosteroneestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • EstradiolestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Estradiol and dienogestoral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Estradiol and norethindroneestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • EtanerceptimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Ethynodiol diacetate and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Etonogestrel and ethinyl estradiolestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • EverolimusimmunosuppressantModerate

    Antineoplastics: Dasatinib, nilotinib, ibrutinib, vinblastine, everolimus ↑Antineoplastics Fosamprenavir calcium or fosamprenavir calcium /ritonavir may increase plasma concentrations of antineoplastics metabolized by CYP3A, potentially increasing the risk of adverse events typically associated with these medications. (Fosamprenavir label, Drug interactions)

  • ExenatideGLP-1 receptor agonistModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • FamotidineH2 blockerModerate

    Histamine H 2 -receptor antagonists: Cimetidine, famotidine, nizatidine, ranitidine a Fosamprenavir calcium: ↓ Amprenavir Fosamprenavir calcium/ritonavir: Interaction not evaluated Use with caution. (Fosamprenavir label, Drug interactions)

  • Felodipinedihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • FingolimodimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Fluconazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • FluoxetineSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • FluvastatinstatinModerate

    Lipid Modifying Agents: HMG-CoA reductase inhibitors : Atorvastatin a Lovastatin, simvastatin Other lipid modifying agents : Lomitapide ↑Atorvastatin ↑Lovastatin ↑Simvastatin ↑Lomitapide Titrate atorvastatin dose carefully and use the lowest necessary dose; do not exceed atorvastatin 20 mg/day. (Fosamprenavir label, Drug interactions)

  • FluvoxamineSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • FulvestrantestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Garlic (supplement)Herbal and supplementModerate

    Garlic supplements may reduce the effectiveness of some HIV protease inhibitors. (NCCIH, Garlic)

  • GefitinibModerate

    • CYP3A4 Inhibitor: Monitor adverse reactions if concomitant use with IRESSA. (Gefitinib label, Drug interactions)

  • GlimepiridesulfonylureaModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • GlipizidesulfonylureaModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Glipizide and metforminsulfonylureaModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • GlyburidesulfonylureaModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Glyburide and metforminsulfonylureaModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • GriseofulvinantifungalModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • GuselkumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • IfosfamideModerate

    • CYP3A4 Inhibitors: Use in combination with CYP3A4 inhibitors could decrease the effectiveness of ifosfamide. (Ifosfamide label, Drug interactions)

  • InfliximabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Insulin aspartinsulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Insulin degludecinsulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Insulin detemirinsulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Insulin glargineinsulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Insulin lisproinsulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Insulin regular (human)insulinModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Isradipinedihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • IvacaftorCYP3A4 inhibitorModerate

    Potential for other drugs to affect ivacaftor CYP3A inhibitors: Reduce KALYDECO dosage in patients aged 6 months and older when co-administered with strong CYP3A inhibitors (e.g., ketoconazole) or moderate CYP3A inhibitors (e.g., fluconazole). (Ivacaftor label, Drug interactions)

  • LamotrigineanticonvulsantModerate

    Anticonvulsants: Carbamazepine, phenobarbital, phenytoin Fosamprenavir calcium: ↓ Amprenavir Use with caution. (Fosamprenavir label, Drug interactions)

  • Lansoprazoleproton pump inhibitorModerate

    Proton pump inhibitors: Esomeprazole a , lansoprazole, omeprazole, pantoprazole, rabeprazole Fosamprenavir calcium: ↔ Amprenavir ↑ Esomeprazole Proton pump inhibitors can be administered at the same time as a dose of fosamprenavir calcium with no change in plasma amprenavir concentrations. (Fosamprenavir label, Drug interactions)

  • LeflunomideimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • LevomilnacipranSNRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Levonorgestrel and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Lidocaine and epinephrinelocal anestheticModerate

    Antiarrhythmics: Amiodarone, disopyramide, lidocaine (systemic), and quinidine Flecainide, propafenone ↑ Antiarrhythmics ↑Antiarrhythmics Therapeutic concentration monitoring, if available, is recommended for antiarrhythmics. (Fosamprenavir label, Drug interactions)

  • LinagliptinDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Linagliptin and metforminDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • LiraglutideGLP-1 receptor agonistModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • LoperamideQT-prolonging drugModerate

    Drug Interactions Effects of Other Drugs on Loperamide Concomitant use of loperamide hydrochloride capsules with inhibitors of CYP3A4 (e.g., itraconazole) or CYP2C8 (e.g., gemfibrozil) or inhibitors of P-glycoprotein (e.g., quinidine, ritonavir) can increase exposure to loperamide. (Loperamide label, Drug interactions)

  • MedroxyprogesteroneprogestinModerate

    John's wort • topiramate HIV protease inhibitors and non-nucleoside reverse transcriptase inhibitors : Significant changes (increase or decrease) in the plasma levels of progestin have been noted in some cases of co-administration of HIV protease inhibitors. (Medroxyprogesterone label, Drug interactions)

  • MefloquineantimalarialModerate

    Ketoconazole (Potent Inhibitor of CYP3A4) Coadministration of a single 500 mg oral dose of mefloquine with 400 mg of ketoconazole once daily for 10 days in 8 healthy volunteers resulted in an increase in the mean C max and AUC of mefloquine by 64% and 79%, respectively, and an increase in the mean elimination half-life of mefloquine from 322 hours to 448 hours. (Mefloquine label, Drug interactions)

  • MercaptopurineantimetaboliteModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • MetforminbiguanideModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Methazolamidecarbonic anhydrase inhibitorModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • MethotrexateimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Miconazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • MifepristoneCYP3A4 inhibitorModerate

    …mifepristone is contraindicated. [See Contraindications (4.3)] 5.6 Use of Strong CYP3A Inhibitors Mifepristone should be used with caution in patients taking ketoconazole and other strong inhibitors of CYP3A, such as itraconazole, nefazodone, ritonavir, nelfinavir, indinavir, atazanavir, amprenavir, fosamprenavir, clarithromycin, conivaptan, lopinavir/ritonavir, posaconazole,… (Mifepristone label, Warnings and precautions)

  • MiglitolantidiabeticModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • MitotaneCYP3A4 inducerModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • ModafinilCNS stimulantModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • MycophenolateimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Nafcillinpenicillin antibioticModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • Naldemedineopioid antagonistModerate

    Moderate (e.g., fluconazole, atazanavir, aprepitant, diltiazem, erythromycin) and Strong (e.g., itraconazole, ketoconazole, clarithromycin, ritonavir, saquinavir) CYP3A Inhibitors Clinical Impact Increase in plasma naldemedine concentrations [see Clinical Pharmacology (12.3) ] Intervention Monitor for potential naldemedine-related adverse reactions [see Adverse… (Naldemedine label, Drug interactions)

  • Naltrexone and bupropionopioid antagonistModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • NatalizumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • NateglinidemeglitinideModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • NefazodoneantidepressantModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Nicardipinedihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Nifedipinedihydropyridine calcium channel blockerModerate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • NintedanibModerate

    Coadministration of P-gp and CYP3A4 inhibitors may increase nintedanib exposure. (Nintedanib label, Drug interactions)

  • NizatidineH2 blockerModerate

    Histamine H 2 -receptor antagonists: Cimetidine, famotidine, nizatidine, ranitidine a Fosamprenavir calcium: ↓ Amprenavir Fosamprenavir calcium/ritonavir: Interaction not evaluated Use with caution. (Fosamprenavir label, Drug interactions)

  • Norelgestromin and ethinyl estradiolestrogenModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • NorethindroneprogestinModerate

    Substances increasing the systemic concentrations of HCs: Co-administration of certain HCs and strong or moderate CYP3A4 inhibitors such as itraconazole, voriconazole, fluconazole, grapefruit juice, or ketoconazole may increase the systemic concentrations of progestins, including norethindrone. (Norethindrone label, Drug interactions)

  • Norethindrone and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Norgestimate and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • Norgestrel and ethinyl estradioloral contraceptiveModerate

    Fosamprenavir calcium: ↓ Amprenavir ↓ Ethinyl estradiol May lead to loss of virologic response. a Fosamprenavir calcium/ritonavir: ↓ Ethinyl estradiol Increased risk of transaminase elevations. (Fosamprenavir label, Drug interactions)

  • OcrelizumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Olmesartan, amlodipine, and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • Omeprazoleproton pump inhibitorModerate

    Proton pump inhibitors: Esomeprazole a , lansoprazole, omeprazole, pantoprazole, rabeprazole Fosamprenavir calcium: ↔ Amprenavir ↑ Esomeprazole Proton pump inhibitors can be administered at the same time as a dose of fosamprenavir calcium with no change in plasma amprenavir concentrations. (Fosamprenavir label, Drug interactions)

  • Omeprazole and sodium bicarbonateproton pump inhibitorModerate

    Antacid: MAALOX TC ↓Amprenavir Use with caution when administered at the same time. (Fosamprenavir label, Drug interactions)

  • OrlistatModerate

    Drug Interactions and Decreased Vitamin Absorption ORLISTAT may interact with concomitant drugs including cyclosporine, levothyroxine, warfarin, amiodarone, antiepileptic drugs, and antiretroviral drugs [see Drug Interactions (7) ]. (Orlistat label, Warnings and precautions)

  • OxybutyninanticholinergicModerate

    Co-administration with strong cytochrome P450 (CYP) 3A4 inhibitors (e.g., ketoconazole) increases the systemic exposure of oxybutynin. (Oxybutynin label, Drug interactions)

  • Pantoprazoleproton pump inhibitorModerate

    Proton pump inhibitors: Esomeprazole a , lansoprazole, omeprazole, pantoprazole, rabeprazole Fosamprenavir calcium: ↔ Amprenavir ↑ Esomeprazole Proton pump inhibitors can be administered at the same time as a dose of fosamprenavir calcium with no change in plasma amprenavir concentrations. (Fosamprenavir label, Drug interactions)

  • Paricalcitolvitamin D analogModerate

    Exposure of Paricalcitol Injection will increase upon coadministration with strong CYP3A inhibitors [see Clinical Pharmacology (12.3) ] . (Paricalcitol label, Drug interactions)

  • ParoxetineSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • PhenelzineMAO inhibitorModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Pimecrolimuscalcineurin inhibitorModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • PioglitazonethiazolidinedioneModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Pioglitazone and glimepiridethiazolidinedioneModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Pioglitazone and metforminthiazolidinedioneModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • PitavastatinstatinModerate

    Lipid Modifying Agents: HMG-CoA reductase inhibitors : Atorvastatin a Lovastatin, simvastatin Other lipid modifying agents : Lomitapide ↑Atorvastatin ↑Lovastatin ↑Simvastatin ↑Lomitapide Titrate atorvastatin dose carefully and use the lowest necessary dose; do not exceed atorvastatin 20 mg/day. (Fosamprenavir label, Drug interactions)

  • PonesimodimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Posaconazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • PravastatinstatinModerate

    Lipid Modifying Agents: HMG-CoA reductase inhibitors : Atorvastatin a Lovastatin, simvastatin Other lipid modifying agents : Lomitapide ↑Atorvastatin ↑Lovastatin ↑Simvastatin ↑Lomitapide Titrate atorvastatin dose carefully and use the lowest necessary dose; do not exceed atorvastatin 20 mg/day. (Fosamprenavir label, Drug interactions)

  • PrimaquineantimalarialModerate

    Published clinical reports indicate primaquine may inhibit CYP3A4 enzyme activity and thus may lead to increased exposure of oral CYP3A4 substrate drugs when co-administered with Primaquine phosphate Tablets. (Primaquine label, Drug interactions)

  • Probenecid and colchicineModerate

    Fosamprenavir calcium/ritonavir and coadministration of colchicine: Treatment of gout flares: 0.6 mg (1 tablet) x 1 dose, followed by 0.3 mg (half tablet) 1 hour later. (Fosamprenavir label, Drug interactions)

  • QuinineantimalarialModerate

    Although a causal relationship between a specific drug and the arrhythmia was not established in this case, erythromycin is a CYP3A4 inhibitor and has been shown to increase quinine plasma levels when used concomitantly. (Quinine label, Warnings and precautions)

  • Rabeprazoleproton pump inhibitorModerate

    Proton pump inhibitors: Esomeprazole a , lansoprazole, omeprazole, pantoprazole, rabeprazole Fosamprenavir calcium: ↔ Amprenavir ↑ Esomeprazole Proton pump inhibitors can be administered at the same time as a dose of fosamprenavir calcium with no change in plasma amprenavir concentrations. (Fosamprenavir label, Drug interactions)

  • RaltegravirantiretroviralModerate

    HIV integrase inhibitor: Raltegravir a Fosamprenavir calcium: ↓ Amprenavir ↓ Raltegravir Fosamprenavir calcium/ritonavir: ↓ Amprenavir ↓ Raltegravir Appropriate doses of the combination with respect to safety and efficacy have not been established. (Fosamprenavir label, Drug interactions)

  • RanitidineH2 blockerModerate

    Histamine H 2 -receptor antagonists: Cimetidine, famotidine, nizatidine, ranitidine a Fosamprenavir calcium: ↓ Amprenavir Fosamprenavir calcium/ritonavir: Interaction not evaluated Use with caution. (Fosamprenavir label, Drug interactions)

  • RepaglinidemeglitinideModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • RifapentineantibioticModerate

    Initiation of medications that inhibit or induce CYP3A may increase or decrease concentrations of fosamprenavir calcium/ritonavir, respectively. (Fosamprenavir label, Warnings and precautions)

  • RilpivirineantiretroviralModerate

    Other boosted PIs (atazanavir/ritonavir, fosamprenavir/ritonavir, saquinavir/ritonavir, tipranavir/ritonavir) ↑ rilpivirine ↔ boosted PI Concomitant use of EDURANT or EDURANT PED with boosted PIs may cause an increase in the plasma concentrations of rilpivirine (inhibition of CYP3A enzymes). (Rilpivirine label, Drug interactions)

  • RiociguatvasodilatorModerate

    Strong CYP and P-gp/BCRP inhibitors: Concomitant use of riociguat with strong cytochrome CYP inhibitors and P-gp/BCRP inhibitors such as azole antimycotics (for example, ketoconazole, itraconazole) or HIV protease inhibitors (such as ritonavir) increase riociguat exposure and may result in hypotension. (Riociguat label, Drug interactions)

  • RitlecitinibJAK inhibitorModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • RituximabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • RoflumilastPDE4 inhibitorModerate

    Use with inhibitors of CYP3A4 or dual inhibitors of CYP3A4 and CYP1A2 (e.g., erythromycin, ketoconazole, fluvoxamine, enoxacin, cimetidine) will increase roflumilast systemic exposure and may result in increased adverse reactions. (Roflumilast label, Drug interactions)

  • RomidepsinModerate

    • Monitor for toxicities related to increased romidepsin exposure when co-administering romidepsin with strong CYP3A4 inhibitors ( 7.2 ). (Romidepsin label, Drug interactions)

  • Ropivacainelocal anestheticModerate

    Coadministration of a selective and potent inhibitor of CYP3A4, ketoconazole (100 mg bid for 2 days with ropivacaine infusion administered 1 hour after ketoconazole) caused a 15% reduction in in vivo plasma clearance of ropivacaine. (Ropivacaine label, Drug interactions)

  • RosuvastatinstatinModerate

    Lipid Modifying Agents: HMG-CoA reductase inhibitors : Atorvastatin a Lovastatin, simvastatin Other lipid modifying agents : Lomitapide ↑Atorvastatin ↑Lovastatin ↑Simvastatin ↑Lomitapide Titrate atorvastatin dose carefully and use the lowest necessary dose; do not exceed atorvastatin 20 mg/day. (Fosamprenavir label, Drug interactions)

  • RuxolitinibJAK inhibitorModerate

    Strong CYP3A4 Inhibitors: Reduce, interrupt, or discontinue JAKAFI/JAKAFI XR doses as recommended except in patients with acute or chronic graft-versus-host-disease. (Ruxolitinib label, Drug interactions)

  • SaxagliptinDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Saxagliptin and metforminDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • SecukinumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • SemaglutideGLP-1 receptor agonistModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • SertralineSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Silver sulfadiazinesulfonamideModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • SitagliptinDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Sitagliptin and metforminDPP-4 inhibitorModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • Sodium bicarbonateantacidModerate

    Antacid: MAALOX TC ↓Amprenavir Use with caution when administered at the same time. (Fosamprenavir label, Drug interactions)

  • SulfadiazinesulfonamideModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • Sulfamethoxazole and trimethoprimsulfonamideModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • SulfasalazinesulfonamideModerate

    Fosamprenavir calcium should be used with caution in patients with a known sulfonamide allergy. (Fosamprenavir label, Warnings and precautions)

  • SunitinibModerate

    Monitor QT interval more frequently when SUTENT is concomitantly administered with strong CYP3A4 inhibitors or drugs known to prolong QT interval. (Sunitinib label, Warnings and precautions)

  • TacrolimusimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • Telmisartan and amlodipineangiotensin II receptor blocker (ARB)Moderate

    Calcium channel blockers: Diltiazem, felodipine, nifedipine, nicardipine, nimodipine, verapamil, amlodipine, nisoldipine, isradipine ↑ Calcium channel blockers Use with caution. (Fosamprenavir label, Drug interactions)

  • TemsirolimusModerate

    Co-administration with Inducers or Inhibitors of CYP3A Metabolism Agents Inducing CYP3A Metabolism: Strong inducers of CYP3A4/5 such as dexamethasone, carbamazepine, phenytoin, phenobarbital, rifampin, rifabutin, and rifampacin may decrease exposure of the active metabolite, sirolimus. (Temsirolimus label, Warnings and precautions)

  • TeriflunomideimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • TinidazoleantibioticModerate

    Simultaneous administration of drugs that inhibit the activity of liver microsomal enzymes, i.e., CYP3A4 inhibitors such as cimetidine and ketoconazole, may prolong the half-life and decrease the plasma clearance of tinidazole, increasing the plasma concentrations of tinidazole. (Tinidazole label, Drug interactions)

  • TirzepatideGLP-1 receptor agonistModerate

    Some patients required either initiation or dose adjustments of insulin or oral hypoglycemic agents for treatment of these events. (Fosamprenavir label, Warnings and precautions)

  • TocilizumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • TofacitinibimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • TolterodineanticholinergicModerate

    Drug Interactions CYP3A4 Inhibitors Ketoconazole, an inhibitor of the drug metabolizing enzyme CYP3A4, significantly increased plasma concentrations of tolterodine when coadministered to subjects who were poor metabolizers (see CLINICAL PHARMACOLOGY, Variability in Metabolism and Drug-Drug Interactions ). (Tolterodine label, Drug interactions)

  • TranylcypromineMAO inhibitorModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • UlipristalModerate

    Increase in Plasma Concentrations of ella Associated with Co-Administered Drugs CYP3A4 inhibitors such as itraconazole or ketoconazole increase plasma concentrations of ella [see Pharmacokinetics (12.3) ] . (Ulipristal label, Drug interactions)

  • UstekinumabimmunosuppressantModerate

    Immunosuppressants: Cyclosporine, tacrolimus, sirolimus ↑ Immunosuppressants Therapeutic concentration monitoring is recommended for immunosuppressant agents. (Fosamprenavir label, Drug interactions)

  • ValbenazineVMAT2 inhibitorModerate

    In patients taking a strong CYP2D6 or CYP3A4 inhibitor, or who are CYP2D6 poor metabolizers, INGREZZA and INGREZZA SPRINKLE concentrations may be higher and QT prolongation clinically significant [see Clinical Pharmacology ( 12.2 )] . (Valbenazine label, Warnings and precautions)

  • VenlafaxineSNRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • VilazodoneSSRIModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • Viloxazinenorepinephrine reuptake inhibitorModerate

    CYP3A4 Substrates Clinical Impact Viloxazine is a weak inhibitor of CYP3A4 which increases the exposure of CYP3A4 substrates when coadministered [see Clinical Pharmacology (12.3) ]. (Viloxazine label, Drug interactions)

  • VinorelbineModerate

    Inhibitors of CYP3A4: May cause earlier onset and/or increased severity of adverse reactions ( 7.1 ) (Vinorelbine label, Drug interactions)

  • Voriconazoleazole antifungalModerate

    Antifungals: Ketoconazole a , itraconazole ↑ Ketoconazole ↑ Itraconazole Increase monitoring for adverse events. (Fosamprenavir label, Drug interactions)

  • VortioxetineantidepressantModerate

    Antidepressant: Paroxetine, trazodone ↓ Paroxetine Any paroxetine dose adjustment should be guided by clinical effect (tolerability and efficacy). ↑ Trazodone Adverse events of nausea, dizziness, hypotension, and syncope have been observed following coadministration of trazodone and ritonavir. (Fosamprenavir label, Drug interactions)

  • WarfarinanticoagulantModerate

    …bicalutamide, cilostazol, cimetidine, ciprofloxacin, clarithromycin, conivaptan, cyclosporine, darunavir/ritonavir, diltiazem, erythromycin, fluconazole, fluoxetine, fluvoxamine, fosamprenavir, imatinib, indinavir, isoniazid, itraconazole, ketoconazole, lopinavir/ritonavir, nefazodone, nelfinavir, nilotinib, oral contraceptives, posaconazole, ranitidine, ranolazine,… (Warfarin label, Drug interactions)

  • Zafirlukastleukotriene receptor antagonistModerate

    As zafirlukast is known to be an inhibitor of CYP3A4 in vitro , it is reasonable to employ appropriate clinical monitoring when these drugs are coadministered with zafirlukast. (Zafirlukast label, Precautions)

Minor mentions (22)

  • AbirateroneCYP2D6 inhibitorMinor

    Because ritonavir is a CYP2D6 inhibitor, clinically significant interactions with drugs metabolized by CYP2D6 are possible when coadministered with fosamprenavir calcium plus ritonavir. (Fosamprenavir label, Drug interactions)

  • ArgatrobananticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • BivalirudinanticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • DabigatrananticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • Dutasteride5-alpha reductase inhibitorMinor

    The effect of potent CYP3A4 inhibitors on dutasteride has not been studied. (Dutasteride label, Drug interactions)

  • EdoxabananticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • EltrombopagOATP1B1 inhibitorMinor

    Drug interactions with other HIV protease inhibitors have not been evaluated. (Eltrombopag label, Drug interactions)

  • EnoxaparinanticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • EribulinMinor

    Effects of Other Drugs on HALAVEN No drug-drug interactions are expected with CYP3A4 inhibitors, CYP3A4 inducers or P-glycoprotein (P-gp) inhibitors. (Eribulin label, Drug interactions)

  • FamciclovirantiviralMinor

    An in vitro study using human liver microsomes suggests that famciclovir is not an inhibitor of CYP3A4 enzymes. (Famciclovir label, Drug interactions)

  • FondaparinuxanticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • HeparinanticoagulantMinor

    Anticoagulant: Warfarin Concentrations of warfarin may be affected. (Fosamprenavir label, Drug interactions)

  • ImatinibCYP3A4 inhibitorMinor

    Because ritonavir is a CYP2D6 inhibitor, clinically significant interactions with drugs metabolized by CYP2D6 are possible when coadministered with fosamprenavir calcium plus ritonavir. (Fosamprenavir label, Drug interactions)

  • LenacapavirantiretroviralMinor

    Effect of SUNLENCA on Other Drugs Lenacapavir is a moderate inhibitor of CYP3A. (Lenacapavir label, Drug interactions)

  • LevonorgestrelprogestinMinor

    Oral contraceptives: Ethinyl estradiol/norethindrone a Alternative methods of non-hormonal contraception are recommended. (Fosamprenavir label, Drug interactions)

  • MegestrolprogestinMinor

    Oral contraceptives: Ethinyl estradiol/norethindrone a Alternative methods of non-hormonal contraception are recommended. (Fosamprenavir label, Drug interactions)

  • Memantine and donepezilcholinesterase inhibitorMinor

    Effect of Other Drugs on the Metabolism of Donepezil Inhibitors of CYP3A4 (e.g., ketoconazole) and CYP2D6 (e.g., quinidine), inhibit donepezil metabolism in vitro . (Memantine and donepezil label, Drug interactions)

  • ProgesteroneprogestinMinor

    Oral contraceptives: Ethinyl estradiol/norethindrone a Alternative methods of non-hormonal contraception are recommended. (Fosamprenavir label, Drug interactions)

  • RanolazineQT-prolonging drugMinor

    Because ritonavir is a CYP2D6 inhibitor, clinically significant interactions with drugs metabolized by CYP2D6 are possible when coadministered with fosamprenavir calcium plus ritonavir. (Fosamprenavir label, Drug interactions)

  • RolapitantCYP2D6 inhibitorMinor

    Because ritonavir is a CYP2D6 inhibitor, clinically significant interactions with drugs metabolized by CYP2D6 are possible when coadministered with fosamprenavir calcium plus ritonavir. (Fosamprenavir label, Drug interactions)

  • TerbinafineantifungalMinor

    Because ritonavir is a CYP2D6 inhibitor, clinically significant interactions with drugs metabolized by CYP2D6 are possible when coadministered with fosamprenavir calcium plus ritonavir. (Fosamprenavir label, Drug interactions)

  • ZileutonCYP1A2 inhibitorMinor

    However, no formal drug-drug interaction studies between zileuton and CYP3A4 inhibitors, such as ketaconazole, have been conducted. (Zileuton label, Drug interactions)

No significant interaction reported (1)

  • DesloratadineantihistamineNo interaction

    Inhibitors of Cytochrome P450 3A4 In controlled clinical studies co-administration of desloratadine with ketoconazole, erythromycin, or azithromycin resulted in increased plasma concentrations of desloratadine and 3 hydroxydesloratadine, but there were no clinically relevant changes in the safety profile of desloratadine. [See Clinical Pharmacology (12.3) .]… (Desloratadine label, Drug interactions)

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Not medical advice. Severity reflects the label's wording, not your circumstances. A "major" flag can be routine under supervision and a "minor" one can matter at high doses. Ask a pharmacist.