Interação entre Fosamprenavir e Ritonavir
Fosamprenavir e Ritonavir: ambas as bulas profissionais sinalizam esta combinação com a linguagem mais forte, como uma contraindicação, uma advertência em caixa preta ou uma instrução para evitá-la.
Não combine sem a orientação de um prescritor. A linguagem da bula abaixo é a mais forte que a FDA usa.
O que dizem as bulas da FDA
Da bula de Fosamprenavir (Fosamprenavir Calcium) · em vigor desde 2026-06-30
The list of contraindicated drugs applies to the use of fosamprenavir calcium with or without ritonavir, unless otherwise indicated.
If fosamprenavir calcium is coadministered with ritonavir, reference should be made to the full prescribing information for ritonavir for additional contraindications.
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…
Review ritonavir contraindications when used in combination.
…clinically significant adverse reactions, potentially leading to severe, life-threatening, or fatal events from greater exposures of concomitant medications. clinically significant adverse reactions from greater exposures of fosamprenavir calcium/ritonavir. loss of therapeutic effect of fosamprenavir calcium/ritonavir and possible development of resistance.
Da bula de Ritonavir (Norvir) · em vigor desde 2026-07-23
When co-administering NORVIR with other protease inhibitors, see the full prescribing information for that protease inhibitor including important Warnings and Precautions.
Hepatotoxicity Hepatic transaminase elevations exceeding 5 times the upper limit of normal, clinical hepatitis, and jaundice have occurred in patients receiving NORVIR alone or in combination with other antiretroviral drugs (see Table 2).
Continued administration of ritonavir 600 mg twice daily following loss of viral suppression may increase the likelihood of cross-resistance to other protease inhibitors [see Microbiology ( 12.4 ) ] .
Titrate atorvastatin and rosuvastatin dose carefully and use the lowest necessary dose.If NORVIR is used with another protease inhibitor, see the complete prescribing information for the concomitant protease inhibitor for details on co-administration with atorvastatin and rosuvastatin.
…Interactions Concomitant Drug Class: Drug Name Effect on Concentration of Ritonavir or Concomitant Drug Clinical Comment HIV-Antiviral Agents HIV-1 Protease Inhibitor: atazanavir darunavir fosamprenavir ↑ amprenavir ↑ atazanavir ↑ darunavir See the complete prescribing information for fosamprenavir, atazanavir, darunavir for details on co-administration with ritonavir.
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Abrir no verificadorNão é aconselhamento médico. Interaction Checker cita o texto das bulas da FDA e fichas informativas do NIH. A importância de uma interação para você depende das doses, dos horários, da função renal e hepática e de outras condições de saúde. Confirme com um farmacêutico ou com o prescritor.