Protriptyline interactions

Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Acetaminophen and codeine label, Boxed warning)

Avoid administrations of TUDORZA PRESSAIR with other anticholinergic-containing drugs. (Aclidinium label, Drug interactions)

Combining alcohol with sedating medicines (opioids, benzodiazepines, sleep medicines, muscle relaxants) can cause dangerous drowsiness, slowed breathing, and overdose. (NIAAA, Harmful Interactions: Mixing Alcohol with Medicines)

• Effects on Driving and Operating Machinery: Patients receiving • alprazolam XR should be cautioned against operating machinery or driving a motor vehicle, as well as avoiding concomitant use of alcohol and other central nervous system (CNS) depressant drugs. (Alprazolam label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Serotonin Syndrome: Increased risk when co-administered with serotonergic agents (e.g., SSRIs, SNRIs, triptans), but also during overdosage situations. (Amphetamine label, Warnings and precautions)

Serotonin Syndrome: Increased risk when coadministered with serotonergic agents (e.g., selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), triptans), but also during overdosage situations. (Amphetamine and dextroamphetamine label, Warnings and precautions)

Antidepressants: tricyclic antidepressants ↑ tricyclic antidepressants Coadministration with REYATAZ has the potential to produce serious and/or life-threatening adverse events and has not been studied. (Atazanavir label, Drug interactions)

• Avoid concurrent use of alcohol or other central nervous system (CNS) depressants with azelastine hydrochloride and fluticasone propionate nasal spray because further decreased alertness and impairment of CNS performance may occur. (Azelastine and fluticasone label, Warnings and precautions)

…AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL EXPOSURE; NEONATAL OPIOD WITHDRAWAL SYNDROME; and RISKS FROM CONCOMITANT USE WITH ALCOHOL, BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Belladonna and opium suppositories expose patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Belladonna and opium label, Boxed warning)

Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Buprenorphine label, Boxed warning)

Serotonergic Drugs: Concomitant use may result in serotonin syndrome. (Buprenorphine and naloxone label, Drug interactions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Serotonin Syndrome The development of a potentially life-threatening serotonin syndrome has been reported with SNRIs SSRIs, and other serotonergic drugs, including buspirone, alone but particularly with concomitant use of other serotonergic drugs (including triptans), with drugs that impair metabolism of serotonin (in particular, MAOIs, including reversible MAOIs… (Buspirone label, Warnings)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butalbital, acetaminophen, caffeine, and codeine label, Boxed warning)

Concomitant use of opioids or a barbiturate with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butalbital, aspirin, caffeine, and codeine label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butorphanol label, Boxed warning)

Known hypersensitivity to any of the tricyclic compounds (e.g., amitriptyline, desipramine, imipramine, protriptyline, and nortriptyline.) Hypersensitivity reactions include anaphylaxis and serious rash. (Carbamazepine label, Contraindications)

Avoid concurrent use of Carbinoxamine Maleate Extended-Release Oral Suspension with alcohol or other central nervous system depressants because additional impairment of central nervous system performance may occur. (Carbinoxamine label, Warnings and precautions)

Avoid concurrent use of QUZYTTIR with alcohol or other CNS depressants because additional reduction in alertness and additional impairment of CNS performance may occur. (Cetirizine label, Warnings and precautions)

Table 8: Drugs That are Affected by and Affecting Ciprofloxacin Drugs That are Affected by Ciprofloxacin Drug(s) Recommendation Comments Tizanidine Contraindicated Concomitant administration of tizanidine and ciprofloxacin is contraindicated due to the potentiation of hypotensive and sedative effects of tizanidine [see Contraindications ( 4.2 )]. (Ciprofloxacin label, Drug interactions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Avoid use with other central nervous system (CNS) depressants ( 5.3 ) (Clonidine label, Warnings and precautions)

When possible, avoid concomitant use, with other anticholinergic medications because the risk for anticholinergic toxicity or severe gastrointestinal adverse reactions is increased [see Warnings and Precautions ( 5.7 ), Drug Interactions ( 7.1 )]. (Clozapine label, Warnings and precautions)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Codeine label, Boxed warning)

Hyperpyretic crisis seizures and deaths have occurred in patients who received cyclobenzaprine (or structurally similar tricyclic antidepressants) concomitantly with MAO inhibitors drugs. (Cyclobenzaprine label, Contraindications)

…elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam Co-administration of PREZISTA/ritonavir is contraindicated with drugs that are highly dependent on CYP3A for clearance… (Darunavir label, Contraindications)

…elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam PREZCOBIX or PREZCOBIX PED is contraindicated in patients receiving certain co-administered drugs for which altered plasma… (Darunavir and cobicistat label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Serotonergic Drugs The concomitant use of dextroamphetamine sulfate and serotonergic drugs increases the risk of serotonin syndrome. (Dextroamphetamine label, Drug interactions)

Serotonin syndrome: Use of NUEDEXTA with selective serotonin reuptake inhibitor (SSRIs) or tricyclic antidepressants increases the risk. (Dextromethorphan and quinidine label, Warnings and precautions)

Usage of MOTOFEN ® in recommended doses is not likely to cause prominent anticholinergic side effects, but MOTOFEN ® should be avoided in patients in whom anticholinergic drugs are contraindicated. (Difenoxin and atropine label, Warnings)

CONTRAINDICATIONS Diphenoxylate hydrochloride and atropine sulfate is contraindicated in: • Pediatric patients less than 6 years of age due to the risks of respiratory and central nervous system (CNS) depression (see WARNINGS ). (Diphenoxylate and atropine label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

…Pharmacology (12.3) ] • Concomitant use of drugs or herbal products that prolong the QT interval and might increase the risk of torsade de pointes, such as phenothiazine antipsychotics, tricyclic antidepressants, certain oral macrolide antibiotics, and Class I and III antiarrhythmics • Liver or lung toxicity related to the previous use of amiodarone • QTc interval… (Dronedarone label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Selective Serotonin Reuptake Inhibitors/Serotonin and Norepinephrine Reuptake Inhibitors and Serotonin Syndrome Cases of serotonin syndrome have been reported during co-administration of triptans and SSRIs, SNRIs, TCAs and MAO inhibitors [see Warnings and Precautions (5.7) ]. (Eletriptan label, Drug interactions)

…Lipid-modifying Agents: lomitapide, lovastatin, simvastatin Phosphodiesterase-5 (PDE-5) Inhibitor: sildenafil when administered as REVATIO ® for the treatment of pulmonary arterial hypertension Sedative/hypnotics: triazolam, orally administered midazolam Coadministration of GENVOYA is contraindicated with drugs that: Are highly dependent on CYP3A for clearance and for which… (Elvitegravir, cobicistat, emtricitabine, and tenofovir label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

The use of LUNESTA with other sedative-hypnotics at bedtime or the middle of the night is not recommended. (Eszopiclone label, Warnings and precautions)

• Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Fentanyl label, Boxed warning)

THESE ARE MOST FREQUENT IN PATIENTS WHO HAVE BEEN ON BENZODIAZEPINES FOR LONG-TERM SEDATION OR IN OVERDOSE CASES WHERE PATIENTS ARE SHOWING SIGNS OF SERIOUS CYCLIC ANTIDEPRESSANT OVERDOSE. (Flumazenil label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

…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)

Selective Serotonin Reuptake Inhibitors / Serotonin Norepinephrine Reuptake Inhibitors and Serotonin Syndrome Cases of serotonin syndrome have been reported during combined use of triptans and SSRIs, SNRIs, TCAs, and MAO inhibitors [ see Warnings and Precautions (5.7) ]. (Frovatriptan label, Drug interactions)

Intervention Concomitant use of anticholinergic drugs with GVOKE VialDx is not recommended. (Glucagon label, Drug interactions)

• Other Conditions Exacerbated by Anticholinergic Adverse Reactions : Use is not recommended in patients with autonomic neuropathy, hyperthyroidism, cardiac disease, hiatal hernia, etc. (Glycopyrrolate label, Warnings and precautions)

Serotonin syndrome has been reported with granisetron products, alone but particularly with concomitant use of serotonergic drugs. (Granisetron label, Warnings and precautions)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Hydrocodone label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Hydrocodone and acetaminophen label, Boxed warning)

…ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; MEDICATION ERRORS; CYTOCHROME P450 3A4 INTERACTION; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; INTERACTION WITH ALCOHOL; NEONATAL OPIOID WITHDRAWAL SYNDROME WARNING: ADDICTION, ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION;… (Hydrocodone and chlorpheniramine label, Boxed warning)

…ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; MEDICATION ERRORS; CYTOCHROME P450 3A4 INTERACTION; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; INTERACTION WITH ALCOHOL; NEONATAL OPIOID WITHDRAWAL SYNDROME Addiction, Abuse, and Misuse Hydrocodone bitartrate and homatropine methylbromide exposes patients and… (Hydrocodone and homatropine label, Boxed warning)

…LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; CYTOCHROME P4503A4 INTERACTION; RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; and SERIOUS CARDIOVASCULAR AND GASTROINTESTINAL EVENTS WARNING: SERIOUS AND LIFE-THREATENING RISKS FROM USE OF HYDROCODONE BITARTRATE AND IBUPROFEN TABLETS Addiction,… (Hydrocodone and ibuprofen label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death . (Hydromorphone label, Boxed warning)

Rarely, cardiac arrests and death have been reported in association with the combined use of hydroxyzine hydrochloride intramuscularly and other CNS depressants. (Hydroxyzine label, Precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Avoid administration of ATROVENT HFA with other anticholinergic-containing drugs ( 7.1 ) (Ipratropium label, Drug interactions)

When it is desired to substitute protriptyline for a monoamine oxidase inhibitor, a minimum of 14 days should be allowed to elapse after the latter is discontinued. (Protriptyline label, Contraindications)

Benzodiazepines, Opioid Analgesics, or other CNS Depressants : Concomitant use may result in profound sedation, respiratory depression, coma, or death. (Ketamine label, Drug interactions)

This may potentiate and prolong hypnotic and sedative effects, especially with repeated dosing or chronic administration of these agents. (Ketoconazole label, Contraindications)

Avoid concurrent use of alcohol or other central nervous system depressants with XYZAL. (Levocetirizine label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Levorphanol label, Boxed warning)

When it is desired to substitute protriptyline for a monoamine oxidase inhibitor, a minimum of 14 days should be allowed to elapse after the latter is discontinued. (Protriptyline label, Contraindications)

Serotonin Syndrome: Increased risk when co-administered with serotonergic agents (e.g., SSRIs, SNRIs, triptans), but also during overdosage situations. (Lisdexamfetamine label, Warnings and precautions)

If concomitant use of lithium with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms. (Lithium label, Warnings and precautions)

…Non-opioid Analgesic (selective blocker of Nav1.8 sodium channels): suzetrigine PDE5 Inhibitor: sildenafil (Revatio ® ) when used for the treatment of pulmonary arterial hypertension Sedative/Hypnotics: triazolam, orally administered midazolam KALETRA is contraindicated with drugs that are potent CYP3A inducers where significantly reduced lopinavir plasma concentrations… (Lopinavir and ritonavir label, Contraindications)

Caution patients receiving LOREEV XR against operating machinery or driving a motor vehicle as well to avoid the concomitant use of alcohol and other CNS depressant drugs during treatment ( 5.4 , 7 ) (Lorazepam label, Warnings and precautions)

Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Meperidine label, Boxed warning)

If concomitant use with another CNS depressant is warranted, closely monitor for signs of respiratory depression and sedation, particularly during treatment initiation and dosage increases. (Metaxalone label, Warnings and precautions)

Managing Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, is a risk factor for respiratory depression and death [see Warnings and Precautions ( 5.2 )]. (Methadone label, Boxed warning)

Serotonin Syndrome: Increased risk when coadministered with serotonergic agents (e.g., SSRIs, SNRIs, triptans), but also during overdosage situations. (Methamphetamine label, Warnings and precautions)

When it is desired to substitute protriptyline for a monoamine oxidase inhibitor, a minimum of 14 days should be allowed to elapse after the latter is discontinued. (Protriptyline label, Contraindications)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, malignant hyperthermia, drug fever, serotonin syndrome, and primary central nervous system pathology. (Metoclopramide label, Warnings and precautions)

WARNING: PERSONNEL AND EQUIPMENT FOR MONITORING AND RESUSCITATION AND RISKS FROM CONCOMITANT USE WITH OPIOID ANALGESICS AND OTHER SEDATIVE-HYPNOTICS Personnel and Equipment for Monitoring and Resuscitation Only personnel trained in the administration of procedural sedation, and not involved in the conduct of the diagnostic or therapeutic procedure, should administer… (Midazolam label, Boxed warning)

• Serotonin Syndrome : Increased risk when co-administered with other serotonergic agents, but also when taken alone. (Milnacipran label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Morphine label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Nalbuphine label, Boxed warning)

Risk of Recurrent Respiratory and CNS Depression : A recurrence of respiratory depression is possible, therefore, keep the patient under continued surveillance and administer repeat doses of ZURNAI using a new auto-injector with each dose while awaiting emergency medical assistance. (Nalmefene label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Selective Serotonin Reuptake Inhibitors/Serotonin Norepinephrine Reuptake Inhibitors and Serotonin Syndrome Cases of serotonin syndrome have been reported during co-administration of triptans and SSRIs, SNRIs, TCAs, and MAO inhibitors [see Warnings and Precautions (5.7)] . (Naratriptan label, Drug interactions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

…(selective blocker of Na v 1.8 sodium channels): suzetrigine • Opioid antagonists: naloxegol • PDE5 inhibitor: sildenafil (Revatio ® ) when used for pulmonary arterial hypertension (PAH) • Sedative/hypnotics: triazolam, oral midazolam • Serotonin receptor 1A agonist/serotonin receptor 2A antagonist: flibanserin • Vasopressin receptor antagonists: tolvaptan ➢ Drugs that… (Nirmatrelvir and ritonavir label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oliceridine label, Boxed warning)

• Avoid concurrent use of alcohol or other central nervous system depressants with olopatadine hydrochloride nasal solution (nasal spray) ( 5.2 ). (Olopatadine label, Warnings and precautions)

• Avoid concurrent use of alcohol or other central nervous system (CNS) depressants with RYALTRIS because additional reductions in alertness and additional impairment of CNS performance may occur. (Olopatadine and mometasone label, Warnings and precautions)

S e ro t o ni n Syndrome: Serotonin syndrome has been reported with 5-HT 3 receptor antagonists alone but particularly with concomitant use of serotonergic drugs. (Ondansetron label, Warnings and precautions)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oxycodone label, Boxed warning)

…LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; CYTOCHROME P450 3A4 INTERACTION; and RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Oxycodone hydrochloride tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Oxycodone and acetaminophen label, Boxed warning)

Risks From Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oxymorphone label, Boxed warning)

Serotonin syndrome : reported with 5-HT 3 receptor antagonists alone, but particularly with concomitant use of serotonergic drugs. (Palonosetron label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

…MITIGATION STRATEGY (REMS); LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; and RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Pentazocine and Naloxone Tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Pentazocine and naloxone label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

In patients in whom there is cause for arrest or delay in tablet passage through the gastrointestinal tract, such as those suffering from delayed gastric emptying, esophageal compression, intestinal obstruction or stricture, or those taking anticholinergic medication. (Potassium citrate label, Contraindications)

…PROMETHAZINE AND RESPIRATORY DEPRESSION IN CHILDREN; MEDICATION ERRORS; INTERACTIONS WITH DRUGS AFFECTING CYTOCHROME P450 ISOENZYMES; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; NEONATAL OPIOID WITHDRAWAL SYNDROME Addiction, Abuse, and Misuse Promethazine HCl and Codeine Phosphate Oral Solution exposes patients and other users to the risks… (Promethazine and codeine label, Boxed warning)

Quinidine is also contraindicated in patients who, like those with myasthenia gravis, might be adversely affected by an anticholinergic agent. (Quinidine label, Contraindications)

When it is desired to substitute protriptyline for a monoamine oxidase inhibitor, a minimum of 14 days should be allowed to elapse after the latter is discontinued. (Protriptyline label, Contraindications)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Remifentanil label, Boxed warning)

WARNING: DRUG-DRUG INTERACTIONS LEADING TO POTENTIALLY SERIOUS AND/OR LIFE THREATENING REACTIONS Co-administration of NORVIR with several classes of drugs including sedative hypnotics, antiarrhythmics, or ergot alkaloid preparations may result in potentially serious and/or life-threatening adverse events due to possible effects of NORVIR on the hepatic metabolism… (Ritonavir label, Boxed warning)

Concomitant use with metoclopramide, beta-blockers, or cholinomimetic and anticholinergic drugs is not recommended ( 7.1 , 7.2 , 7.3 ) (Rivastigmine label, Drug interactions)

When it is desired to substitute protriptyline for a monoamine oxidase inhibitor, a minimum of 14 days should be allowed to elapse after the latter is discontinued. (Protriptyline label, Contraindications)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Abuse or misuse of illicit GHB, either alone or in combination with other CNS depressants, is associated with CNS adverse reactions, including seizure, respiratory depression, decreases in the level of consciousness, coma, and death [see Warnings and Precautions ( 5.2 )]. (Sodium oxybate label, Boxed warning)

Combining St. John's wort with antidepressants and other serotonergic drugs increases the risk of serotonin syndrome. (NCCIH, St. John's Wort)

Selective Serotonin Reuptake Inhibitors/Serotonin Norepinephrine Reuptake Inhibitors and Serotonin Syndrome Cases of serotonin syndrome have been reported during coadministration of triptans and SSRIs, SNRIs, TCAs, and MAO inhibitors [see Warnings and Precautions (5.7)] . (Sumatriptan label, Drug interactions)

Selective Serotonin Reuptake Inhibitors/Serotonin Norepinephrine Reuptake Inhibitors and Serotonin Syndrome Clinical Impact: Cases of serotonin syndrome have been reported during coadministration of triptans and SSRIs, SNRIs, TCAs, and MAO inhibitors [see Warnings and Precautions (5.11)] . (Sumatriptan and naproxen label, Drug interactions)

Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tapentadol label, Boxed warning)

Avoid administration of SPIRIVA RESPIMAT with other anticholinergic-containing drugs. (Tiotropium label, Drug interactions)

Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tramadol label, Boxed warning)

Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tramadol and acetaminophen label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

• Effects on Driving and Operating Heavy Machinery : Patients receiving triazolam should be cautioned against driving or operating heavy machinery, as well as avoiding concomitant use with alcohol and other CNS depressant drugs. (Triazolam label, Warnings and precautions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Avoid administration of Umeclidinium ELLIPTA with other anticholinergic-containing drugs. (Umeclidinium label, Drug interactions)

Avoid administration of Umeclidinium and Vilanterol ELLIPTA with other anticholinergic-containing drugs. (Umeclidinium and vilanterol label, Drug interactions)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. (Protriptyline label, Boxed warning)

The use of zaleplon with other sedative-hypnotics at bedtime or the middle of the night is not recommended (see ). (Zaleplon label, Warnings)

• Serotonin Syndrome : Increased risk when co-administered with other serotonergic agents, but also when taken alone. (Ziprasidone label, Warnings and precautions)

The use of Zolpidem Tartrate with other sedative-hypnotics (including other zolpidem products) at bedtime or the middle of the night is not recommended. (Zolpidem label, Warnings and precautions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Inform patients also that the central nervous system depressant effects of allopurinol tablets may be additive to those of alcohol and other CNS depressants. (Allopurinol label, Warnings and precautions)

25% increase Diazepam Benzodiazepines increase CNS concentrations of adenosine, a potent CNS depressant, while theophylline blocks adenosine receptors. (Aminophylline label, Drug interactions)

Table 5: Amiodarone Drug Interactions Concomitant Drug Class/Name Examples Clinical Comment QT Prolonging Drugs class I and III antiarrhythmics, lithium, certain phenothiazines, tricyclic antidepressants, certain fluoroquinolone and macrolide antibiotics, azole antifungals, halogenated inhalation anesthetic agents Increased risk of Torsade de Pointes. (Amiodarone label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drugs that alter gastrointestinal motility: The bioavailability of thiazide-type diuretics may be increased by anticholinergic agents (e.g., atropine, biperiden), apparently due to a decrease in gastrointestinal motility and the stomach emptying rate. (Benazepril and hydrochlorothiazide label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Sedatives/Hypnotics: midazolam (oral) triazolam ↑ midazolam (oral) ↑ triazolam Use caution when midazolam or triazolam is concomitantly administered with BIXLENVO. (Bictegravir, emtricitabine, and tenofovir alafenamide label, Drug interactions)

Aminoglycosides or other agents interfering with neuromuscular transmission Anticholinergic drugs Botulinum neurotoxin products Muscle relaxants Aminoglycoside antibiotics, anticholinergic agents, or any other agents that interfere with neuromuscular transmission may potentiate the effect of DAXXIFY; co-administer only with caution and close observation. (Botulinum toxin type A label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Use with CNS depressants may result in an additive or potentiating effect. (Brimonidine label, Drug interactions)

Use with CNS depressants may result in an additive or potentiating effect. (Brimonidine and timolol label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system (CNS) pathology. (Carbidopa label, Warnings)

• Tricyclic antidepressants: risk of hypertension and dyskinesia reported during concomitant use with carbidopa/levodopa ( 7.4 ) (Carbidopa, levodopa, and entacapone label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Cimetidine is reported to reduce hepatic metabolism of certain tricyclic antidepressants, thereby delaying elimination and increasing steady-state concentrations of these drugs. (Protriptyline label, Drug interactions)

Dose adjustments may be required for concomitant medications that are predominantly metabolized by CYP2D6 (e.g., desipramine, metoprolol, and carvedilol) and particularly those with a narrow therapeutic index (e.g., flecainide and most tricyclic antidepressants) [see Clinical Pharmacology ( 12.3 )] . (Cinacalcet label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Darifenacin extended-release tablets, like other anticholinergic drugs, may decrease gastrointestinal motility and should be used with caution in patients with conditions such as severe constipation, ulcerative colitis, and myasthenia gravis. (Darifenacin label, Warnings and precautions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Other Drugs that may Increase Risk of Hyponatremia Concomitant administration of DESMODA with other drugs that may increase the risk of water intoxication with hyponatremia, (e.g., tricyclic antidepressants, selective serotonin re-uptake inhibitors, chlorpromazine, opiate analgesics, thiazide diuretics, NSAIDs, lamotrigine, sulfonylureas, particularly chlorpropamide,… (Desmopressin label, Drug interactions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (Deutetrabenazine label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Anticholinergic agents: may affect the gastrointestinal absorption of various drugs; may also increase certain actions or side effects of other anticholinergic drugs (7) (Dicyclomine label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Antidepressant: Bupropion Sertraline ↓ bupropion * ↓ sertraline * Increases in bupropion dosage should be guided by clinical response. (Efavirenz label, Drug interactions)

Antidepressants: Bupropion ↓ bupropion Increases in bupropion dosage should be guided by clinical response. (Efavirenz, lamivudine, and tenofovir label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Urinary Retention in Adult Patients With Bladder Outlet Obstruction The use of Toviaz, like other antimuscarinic drugs, in patients with clinically significant bladder outlet obstruction, including patients with urinary retention, may result in further urinary retention and kidney injury. (Fesoterodine label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

…prolongation and the potential for torsades de pointes, the use of FOSCAVIR should be avoided in combination with agents known to prolong the QT interval including Class IA (e.g., quinidine or procainamide) or Class III (e.g., dofetilide, amiodarone, sotalol) antiarrhythmic agents, phenothiazines, tricyclic antidepressants, and certain macrolides and fluoroquinolones. (Foscarnet label, Drug interactions)

Avoid co-administration of CONTEPO with drugs known to prolong the QT interval, such as class IA or class III antiarrhythmic medications, tricyclic antidepressants, macrolides, and antipsychotics [see Warnings and Precautions ( 5.2 )] . (Fosfomycin label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Increase IRESSA to 500 mg daily in patients receiving a strong CYP3A4 inducer (e.g., rifampicin, phenytoin, or tricyclic antidepressant) and resume IRESSA at 250 mg 7 days after discontinuation of the strong inducer [see Dosage and Administration (2.4) , Clinical Pharmacology (12.3) ] . (Gefitinib label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Because of its anticholinergic effects, XEOMIN should be used with caution in patients at risk of developing narrow angle glaucoma. (IncobotulinumtoxinA label, Warnings and precautions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

SSRIs, Tricyclics and Related Antidepressants Venlafaxine Monitor for adverse reactions. (Itraconazole label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Antidepressant Therapy Concurrent use of tricyclic (e.g., amitriptyline) or tetracyclic (e.g., maprotiline) antidepressants and levothyroxine may increase the therapeutic and toxic effects of both drugs, possibly due to increased receptor sensitivity to catecholamines. (Levothyroxine label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Antidepressant Therapy Concurrent use of tricyclic (e.g., amitriptyline) or tetracyclic (e.g., maprotiline) antidepressants and liothyronine sodium may increase the therapeutic and toxic effects of both drugs, possibly due to increased receptor sensitivity to catecholamines. (Liothyronine label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Other Drugs that Prolong the QTc Interval Coadministration of other drugs known to alter cardiac conduction (e.g., anti-arrhythmic or beta-adrenergic blocking agents, calcium channel blockers, antihistamines or H 1 -blocking agents, tricyclic antidepressants and phenothiazines) might also contribute to a prolongation of the QTc interval. (Mefloquine label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug interactions Additive anticholinergic effects may result from concomitant use with antipsychotics, tricyclic antidepressants, and other drugs with anticholinergic effects. (Methscopolamine label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Concurrent use of metyrosine with alcohol or other CNS depressants can increase their sedative effects. (Metyrosine label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Pharmacokinetic studies between moxifloxacin and other drugs that prolong the QT interval such as cisapride, erythromycin, antipsychotics, and tricyclic antidepressants have not been performed. (Moxifloxacin label, Warnings and precautions)

WARNINGS AND PRECAUTIONS Risk of Recurrent Respiratory and CNS Depression : Due to the duration of action of naloxone relative to the opioid, respiratory and CNS depression may recur after the first dose of naloxone. (Naloxone label, Warnings and precautions)

An anticholinergic agent, (e.g., atropine sulfate or glycopyrrolate) should be administered prior to Neostigmine Methylsulfate Injection administration to lessen the risk of bradycardia [ see Dosage and Administration ( 2.4 ) ]. (Neostigmine label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Anticholinergic Drugs Use of anticholinergic drugs after administration of BOTOX may potentiate systemic anticholinergic effects. (OnabotulinumtoxinA label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Oxybutynin chloride extended-release tablets, like other anticholinergic drugs, may decrease gastrointestinal motility and should be used with caution in patients with conditions such as ulcerative colitis and intestinal atony. (Oxybutynin label, Warnings and precautions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Acute cardiac arrest may be possible during treatment with tricyclic antidepressants; therefore, Anticholium should only be considered as an antidote for this indication while the patient has continuous ECG monitoring. (Physostigmine label, Warnings and precautions)

These effects should be considered when anticholinergic properties may be contributing to the therapeutic effect of concomitant medication (e.g., atropine, inhaled ipratropium). (Pilocarpine label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Concomitant Use with Midazolam : Noxafil can prolong hypnotic/sedative effects. (Posaconazole label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Anticholinergic drugs administered concurrently with PA may produce additive antivagal effects on A-V nodal conduction, although this is not as well documented for PA as for quinidine. (Procainamide label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Use with caution in persons with increased risk of anticholinergic reactions, such as persons with bronchial asthma, chronic obstructive pulmonary disease, bradycardia, cardiac arrhythmias, beta blocker treatment (increased risk of anticholinergic reactions). (Pyridostigmine label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drugs transported by P-gp (e.g., digoxin), or drugs metabolized by CYP2D6 (e.g., tricyclic antidepressants) may need reduced doses when used with ASPRUZYO Sprinkle. (Ranolazine label, Drug interactions)

…Selective 5-HT 3 Receptor Antagonists Ondansetron Decrease exposure Statins Metabolized by CYP3A4 Simvastatin Decrease exposure Thiazolidinediones Rosiglitazone Decrease AUC by 66% Tricyclic Antidepressants Nortriptyline A tuberculosis treatment regimen including rifampin (600 mg/day), isoniazid (300 mg/day), pyrazinamide (500 mg 3× per day), and pyridoxine (25… (Rifampin label, Drug interactions)

…levonorgestrel Immunosuppressants Cyclosporine, tacrolimus Methylxanthines Theophylline Narcotic analgesics Methadone Phosphodiesterase-5 (PDE-5) Inhibitors Sildenafil Thyroid preparations Levothyroxine Tricyclic antidepressants Amitriptyline, nortriptyline 7.5 Other Interactions The conversion of PRIFTIN to 25-desacetyl rifapentine is mediated by an esterase enzyme. (Rifapentine label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

The onset of symptoms can occur within minutes to hours of receiving a new or a greater dose of a serotonergic medication. (Rizatriptan label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Urinary Retention The use of Solifenacin succinate tablets, like other antimuscarinic drugs, in patients with clinically significant bladder outlet obstruction including patients with urinary retention, may result in further urinary retention and kidney injury. (Solifenacin label, Warnings and precautions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Pretreatment with anticholinergic agents (e.g., atropine) may reduce the occurrence of bradyarrhythmias. (Succinylcholine label, Warnings and precautions)

Monitor for hemodynamic changes and administer anticholinergic agents such as atropine if clinically significant bradycardia is observed. (Sugammadex label, Warnings and precautions)

The efficacy of tricyclic antidepressants can decrease when coadministered with sulfamethoxazole and trimethoprim. (Sulfamethoxazole and trimethoprim label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

25% increase Diazepam Benzodiazepines increase CNS concentrations of adenosine, a potent CNS depressant, while theophylline blocks adenosine receptors. (Theophylline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

…quinidine, procainamide, disopyramide) and Class III (e.g., amiodarone, sotalol, ibutilide, dofetilide) antiarrhythmics; certain antipsychotics (e.g., thioridazine, haloperidol); certain antidepressants (e.g., venlafaxine, amitriptyline); certain antibiotics (e.g., erythromycin, clarithromycin, levofloxacin, ofloxacin); and certain anti-emetics (e.g., ondansetron, granisetron). (Toremifene label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Concurrent use of alcohol or other CNS depressants with trihexyphenidyl may cause increased sedative effects. (Trihexyphenidyl label, Drug interactions)

The recent use of other drugs that cause CNS depression or EPS symptoms may also increase the risk; consider reducing the dosage or discontinuing the drug. (Trimethobenzamide label, Warnings and precautions)

Trospium chloride extended-release capsules, like other antimuscarinic agents, may decrease gastrointestinal motility and should be used with caution in patients with conditions such as ulcerative colitis, intestinal atony and myasthenia gravis. (Trospium label, Warnings and precautions)

Other important considerations in the differential diagnosis include central anticholinergic toxicity, heat stroke, drug fever, and primary central nervous system pathology. (Valbenazine label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Drugs Suspected of Causing SIADH Use with drugs suspected of causing SIADH (e.g., SSRIs, tricyclic antidepressants, haloperidol, chlorpropamide, enalapril, methyldopa, pentamidine, vincristine, cyclophosphamide, ifosfamide, felbamate) may increase the pressor effect in addition to the antidiuretic effect of Vasostrict ® . (Vasopressin label, Drug interactions)

Drug Interactions When protriptyline is given with anticholinergic agents or sympathomimetic drugs, including epinephrine combined with local anesthetics, close supervision and careful adjustment of dosages are required. (Protriptyline label, Drug interactions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Eszopiclone (CYP3A4 Inhibition) Not Studied In Vivo or In Vitro , but Drug Plasma Exposure Likely to be Increased which may Increase the Sedative Effect of Eszopiclone Dose reduction of eszopiclone is recommended. (Voriconazole label, Drug interactions)

The onset of symptoms usually rapidly occurs within minutes to hours of receiving a new or a greater dose of a serotonergic medication. (Zolmitriptan label, Warnings and precautions)

Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants. (Protriptyline label, Drug interactions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

When benztropine mesylate is given concomitantly with phenothiazines, haloperidol, or other drugs with anticholinergic or antidopaminergic activity, patients should be advised to report gastrointestinal complaints, fever or heat intolerance promptly. (Benztropine label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Cevimeline might interfere with desirable antimuscarinic effects of drugs used concomitantly. (Cevimeline label, Drug interactions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Cholinesterase inhibitors have the potential to interfere with the activity of anticholinergic medications ( 7.1 ) (Donepezil label, Drug interactions)

In Drug-Induced CNS and Respiratory Depression Doxapram alone may not stimulate adequate spontaneous breathing or provide sufficient arousal in patients who are severely depressed either due to respiratory failure or to CNS depressant drugs, but may be used as an adjunct to established supportive measures and resuscitative techniques. (Doxapram label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The “gasping syndrome” is characterized by central nervous system (CNS) depression, metabolic acidosis, and gasping respirations. (Epoetin alfa label, Warnings and precautions)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Potential to interfere with the activity of anticholinergic medications ( 7.1 ) (Galantamine label, Drug interactions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

On rare occasions, hyperthyroid patients or those receiving thyroid medication may develop arrhythmias when this drug is given. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

These include itraconazole, ketoconazole, posaconazole, voriconazole, the macrolide antibiotics erythromycin and clarithromycin, the ketolide antibiotic telithromycin, HIV protease inhibitors, boceprevir, telaprevir, the antidepressant nefazodone, or cobicistat-containing products. (Lovastatin label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

NAMZARIC may interfere with anticholinergic medications. (Memantine and donepezil label, Drug interactions)

On rare occasions, hyperthyroid patients or those receiving thyroid medication may develop arrhythmias when this drug is given. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

On rare occasions, hyperthyroid patients or those receiving thyroid medication may develop arrhythmias when this drug is given. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide). (Protriptyline label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Drugs predominantly metabolized by the CYP450 2D6 isozyme include the following drug classes: tricyclic antidepressants, selective serotonin reuptake inhibitors, beta-blockers, antiarrhythmics class 1C (e.g., flecainide and propafenone) and monoamine oxidase inhibitors Type B. (Terbinafine label, Drug interactions)

On rare occasions, hyperthyroid patients or those receiving thyroid medication may develop arrhythmias when this drug is given. (Protriptyline label, Warnings)

It is difficult to determine if Tolcapone tablets played a role in the pathogenesis of these events because these patients received several concomitant medications affecting the central nervous system such as monoaminergic (i.e., MAO-I, tricyclic and selective serotonin reuptake inhibitors) and anticholinergic agents. (Tolcapone label, Precautions)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

Protriptyline may block the antihypertensive effect of guanethidine or similarly acting compounds. (Protriptyline label, Warnings)

No interaction with the tricyclic antidepressant imipramine was shown in a single-dose study with entacapone without coadministered levodopa and dopa-decarboxylase inhibitor. (Entacapone label, Precautions)

Sedatives/Hypnotics: midazolam (oral) triazolam ↑ midazolam (oral) ↑ triazolam Use with caution when midazolam or triazolam is concomitantly administered with SUNLENCA 7.4 Drugs without Clinically Significant Interactions with SUNLENCA Based on drug interaction studies conducted with SUNLENCA, no clinically significant drug interactions have been observed with:… (Lenacapavir label, Drug interactions)

…adjustment is needed when SINGULAIR is co-administered with theophylline, prednisone, prednisolone, oral contraceptives, fexofenadine, digoxin, warfarin, gemfibrozil, itraconazole, thyroid hormones, sedative hypnotics, non-steroidal anti-inflammatory agents, benzodiazepines, decongestants, and Cytochrome P450 (CYP) enzyme inducers [see Clinical Pharmacology (12.3) ]. (Montelukast label, Drug interactions)