Venlafaxine interactions

Reserve the combination of amiodarone with other antiarrhythmic therapies that prolong the QTc to patients with life-threatening ventricular arrhythmias who are incompletely responsive to a single agent. (Amiodarone label, Warnings and precautions)

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

Discontinue treatment with ADDERALL XR and any concomitant serotonergic agents immediately if symptoms of serotonin syndrome occur, and initiate supportive symptomatic treatment. (Amphetamine and dextroamphetamine label, Warnings and precautions)

This risk which can be fatal should be considered in patients with certain cardiovascular disorders including known QT prolongation or history torsades de pointes, those with proarrhythmic conditions, and with other drugs that prolong the QT interval. (Azithromycin label, Warnings and precautions)

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

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

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

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

…medical attention if they ‎experience symptoms of hyperalgesia, including worsening pain, increased ‎sensitivity to pain, or new pain [see WARNINGS ; ADVERSE REACTIONS ].‎ Serotonin Syndrome Inform patients that butorphanol tartrate could cause a rare but potentially life-threatening condition resulting from concomitant administration of serotonergic drugs. (Butorphanol label, Precautions)

Known hypersensitivity to tricyclic antidepressants ( 4 ) (Carbamazepine label, Contraindications)

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval. (Ciprofloxacin label, Warnings and precautions)

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

• Serotonergic Drugs: Concomitant use may result in serotonin syndrome. (Codeine label, Drug interactions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

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

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Use with Drugs that Prolong QT Interval and Antiarrhythmic Agents The use of dofetilide in conjunction with other drugs that prolong the QT interval has not been studied and is not recommended. (Dofetilide label, Warnings)

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

…(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 >500 ms or… (Dronedarone label, Contraindications)

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

Anticoagulants, Antiplatelets, Thrombolytics, and Selective Serotonin Reuptake Inhibitors (SSRIs)/Serotonin Norepinephrine Reuptake Inhibitors (SNRIs): Avoid concomitant use due to increased risk of bleeding. (Edoxaban label, Drug interactions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

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

• Serotonin Syndrome : Potentially life-threatening condition could result from concomitant serotonergic drug administration. (Fentanyl label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Coadministration of other drugs known to prolong the QT interval and which are metabolized via the enzyme CYP3A4 such as erythromycin, pimozide, and quinidine are contraindicated in patients receiving fluconazole. (Fluconazole label, Contraindications)

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

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

Avoid co-administration of CONTEPO with drugs known to prolong the QT interval. (Fosfomycin label, Drug interactions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Serotonin Syndrome Inform patients that hydrocodone bitartrate and acetaminophen tablets could cause a rare but potentially life-threatening condition resulting from concomitant administration of serotonergic drugs. (Hydrocodone and acetaminophen label, Precautions)

• Serotonergic Drugs : Concomitant use may result in serotonin syndrome. (Hydromorphone label, Drug interactions)

Therefore, PLAQUENIL is not recommended in patients taking other drugs that have the potential to prolong the QT interval. (Hydroxychloroquine label, Warnings and precautions)

Avoid the use of FANAPT in combination with any other drugs that prolong the QT interval [see Warnings and Precautions (5.3) ] . (Iloperidone label, Drug interactions)

Serotonin Syndrome and MAOIs: Do not use MAOI’s intended to treat psychiatric disorders with Venlafaxine Extended Release Tablets or within 7 days of stopping treatment with Venlafaxine Extended Release Tablets. (Venlafaxine label, Contraindications)

Bradycardia may increase the risk of QT prolongation which may lead to severe ventricular arrhythmias, including torsade de pointes, especially in patients with risk factors such as use of QTc prolonging drugs [see Adverse Reactions ( 6.2 )] . (Ivabradine label, Warnings and precautions)

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval ( 5.11 , 8.5 ) (Levofloxacin label, Warnings and precautions)

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

Serotonin Syndrome Inform patients that opioids could cause a rare but potentially life-threatening condition resulting from concomitant administration of serotonergic drugs. (Levorphanol label, Precautions)

In addition, do not start Venlafaxine Extended Release Tablets in a patient who is being treated with linezolid or intravenous methylene blue ( 4.1 ). (Venlafaxine 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 Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

LOREEV XR should not be used in such patients without adequate antidepressant therapy. (Lorazepam label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Serotonin Syndrome : Potentially life-threatening condition could result from concomitant serotonergic drug administration. (Methadone label, Warnings and precautions)

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

• Serotonergic Drugs: Concomitant use may result in serotonin syndrome. (Morphine label, Drug interactions)

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

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

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

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Serotonergic Drug s: Concomitant use may result in serotonin syndrome. (Oxycodone label, Drug interactions)

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

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

Serotonin Syndrome Inform patients that opioids could cause a rare but potentially life-threatening condition resulting from concomitant administration of serotonergic drugs. (Pentazocine and naloxone label, Precautions)

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

Drugs that Prolong the QT Interval : Avoid concomitant use. (Phenobarbital label, Drug interactions)

The use of WAKIX should be avoided in patients with known QT prolongation or in combination with other drugs known to prolong the QT interval [see Drug Interactions ( 7.1 )]. (Pitolisant label, Warnings and precautions)

…prolong, or intensify the sedative action of other central-nervous-system depressants, such as alcohol, sedatives/hypnotics (including barbiturates), narcotics, narcotic analgesics, general anesthetics, tricyclic antidepressants, and tranquilizers; therefore, such agents should be avoided or administered in reduced dosage to patients receiving promethazine HCl. (Promethazine label, Drug interactions)

• Avoid use with other antiarrhythmic agents or drugs that prolong the QT interval. (Propafenone label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Serotonin Syndrome and MAOIs: Do not use MAOI’s intended to treat psychiatric disorders with Venlafaxine Extended Release Tablets or within 7 days of stopping treatment with Venlafaxine Extended Release Tablets. (Venlafaxine label, Contraindications)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Serotonin Syndrome and MAOIs: Do not use MAOI’s intended to treat psychiatric disorders with Venlafaxine Extended Release Tablets or within 7 days of stopping treatment with Venlafaxine Extended Release Tablets. (Venlafaxine label, Contraindications)

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

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

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

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Certain conditions may increase the risk for torsade de pointes or sudden death such as (1) bradycardia; (2) hypokalemia or hypomagnesemia; (3) concomitant use of other drugs that prolong the QTc interval; and (4) presence of congenital prolongation of the QT interval [see Warnings and Precautions ( 5.8 ), Clinical Pharmacology (12.2) ]. (Tetrabenazine label, Drug interactions)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

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

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

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

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

…drugs, ziprasidone is contraindicated: • in patients with a known history of QT prolongation (including congenital long QT syndrome) • in patients with recent acute myocardial infarction • in patients with uncompensated heart failure Pharmacokinetic/pharmacodynamic studies between ziprasidone and other drugs that prolong the QT interval have not been performed. (Ziprasidone label, Contraindications)

If concomitant use of Venlafaxine Extended Release Tablets with other serotonergic drugs is clinically warranted, patients should be made aware of a potential increased risk for serotonin syndrome, particularly during treatment initiation and dose increases. (Venlafaxine label, Warnings and precautions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Monoamine oxidase inhibitors and tricyclic antidepressants: Use with extreme caution. (Albuterol label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Patients should be cautioned about the increased risk of bleeding associated with the concomitant use of Venlafaxine Extended Release Tablets and NSAIDs, aspirin, or other drugs that affect coagulation. (Venlafaxine label, Warnings and precautions)

Patients should be cautioned about the increased risk of bleeding associated with the concomitant use of Venlafaxine Extended Release Tablets and NSAIDs, aspirin, or other drugs that affect coagulation. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Caution is advised in patients taking tricyclic antidepressants which can affect the metabolism and uptake of circulating amines. (Brimonidine label, Drug interactions)

Monoamine oxidase inhibitors and tricyclic antidepressants: Use with extreme caution. (Budesonide and formoterol label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Cimetidine: Caution in patients with pre-existing hypertension, in elderly patients and patients with hepatic dysfunction. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

…Interactions The CNS-depressant action of the benzodiazepine class of drugs may be potentiated by alcohol, narcotics, barbiturates, nonbarbiturate hypnotics, antianxiety agents, the phenothiazines, thioxanthene and butyrophenone classes of antipsychotic agents, monoamine oxidase inhibitors and the tricyclic antidepressants, and by other anticonvulsant drugs. (Clonazepam label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Nonsteroidal anti-inflammatory drugs (NSAIDs), warfarin, selective serotonin and serotonin norepinephrine reuptake inhibitors (SSRIs, SNRIs): Increases risk of bleeding. (Clopidogrel label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Co-administration with other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol) increases the risk of CNS depression, which can cause daytime impairment. (Daridorexant label, Warnings and precautions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

…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, oxybutynin… (Desmopressin label, Drug interactions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Diazepam Under steady-state conditions for venlafaxine administered at 150 mg/day, a single 10 mg dose of diazepam did not appear to affect the pharmacokinetics of either venlafaxine or ODV in 18 healthy male subjects. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

…drugs including dicyclomine hydrochloride: amantadine, antiarrhythmic agents of Class I (e.g., quinidine), antihistamines, antipsychotic agents (e.g., phenothiazines), benzodiazepines, MAO inhibitors, narcotic analgesics (e.g., meperidine), nitrates and nitrites, sympathomimetic agents, tricyclic antidepressants, and other drugs having anticholinergic activity. (Dicyclomine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of other drugs that cause dizziness, confusion, sedation, or somnolence such as CNS depressants may increase this effect (e.g., barbiturates, benzodiazepines, lithium, opioids, buspirone, scopolamine, antihistamines, tricyclic antidepressants, other anticholinergic agents, and muscle relaxants). (Dronabinol label, Warnings and precautions)

Monoamine Oxidase Inhibitors (MAOIs) [See Dosage and Administration ( 2.6 and 2.7 ), Contraindications ( 4.1 ), and Warnings and Precautions ( 5.2 ) . ] 7.10 Other Serotonergic Drugs The concomitant use of serotonergic drugs (including other SNRIs, SSRIs, triptans, tricyclic antidepressants, opioids, lithium, buspirone, amphetamines, tryptophan, and St. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

• Drugs that potentiate the effects of epinephrine include sympathomimetics, beta blockers, tricyclic antidepressants, MAO inhibitors, COMT inhibitors, clonidine, doxapram, oxytocin, levothyroxine sodium, and certain antihistamines. (Epinephrine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Additive effects occur with concomitant use of other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol), including daytime use. (Eszopiclone label, Warnings and precautions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Monoamine oxidase inhibitors and tricyclic antidepressants: Use with extreme caution. (Fluticasone and salmeterol label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

• MAO inhibitors, tricyclic antidepressants and drugs that prolong QTc interval may potentiate effect on the cardiovascular system. (Formoterol label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Other Anticholinergic Drugs There is potential for an additive interaction between glycopyrrolate and concomitantly used anticholinergic drugs (e.g., tricyclic antidepressants, anti-epileptics, class I antiarrhythmics, anti­-spasmodics, amantadine) resulting in increased anticholinergic adverse reactions. (Glycopyrrolate label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Haloperidol: Increase in Haloperidol AUC and C max . (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Ketoconazole: Increase in venlafaxine and O-desmethylvenlafaxine AUC and C max . (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Co-administration with other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol) increases the risk of CNS depression, which can cause daytime impairment. (Lemborexant label, Warnings and precautions)

Monoamine oxidase inhibitors (MAOs) or tricyclic antidepressants : May potentiate effect of albuterol on the cardiovascular system. (Levalbuterol 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)

Clinically Significant Drug Interactions The administration of local anesthetic solutions containing epinephrine or norepinephrine to patients receiving monoamine oxidase inhibitors or tricyclic antidepressants may produce severe, prolonged hypertension. (Lidocaine 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)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Monitor all antidepressant-treated patients, especially during the initial few months of anti-depressant drug therapy, and at times of dosage changes. (Lumateperone label, Warnings and precautions)

Activation of Mania/Hypomania Antidepressant treatment can increase the risk of developing a manic or hypomanic episode, particularly in patients with bipolar disorder. (Lurasidone label, Warnings and precautions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Caution should be exercised with co-administration of venlafaxine and metoprolol. (Venlafaxine label, Drug interactions)

Drugs that Prolong the QT Interval QT prolongation has been reported, particularly when metronidazole was administered with drugs with the potential for prolonging the QT interval. (Metronidazole label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine 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)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Monoamine Oxidase Inhibitors (MAOIs) [See Dosage and Administration ( 2.6 and 2.7 ), Contraindications ( 4.1 ), and Warnings and Precautions ( 5.2 ) . ] 7.10 Other Serotonergic Drugs The concomitant use of serotonergic drugs (including other SNRIs, SSRIs, triptans, tricyclic antidepressants, opioids, lithium, buspirone, amphetamines, tryptophan, and St. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Monoamine Oxidase Inhibitors (MAOIs) [See Dosage and Administration ( 2.6 and 2.7 ), Contraindications ( 4.1 ), and Warnings and Precautions ( 5.2 ) . ] 7.10 Other Serotonergic Drugs The concomitant use of serotonergic drugs (including other SNRIs, SSRIs, triptans, tricyclic antidepressants, opioids, lithium, buspirone, amphetamines, tryptophan, and St. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

…combination with other drugs that are known to prolong QTc including Class 1A (e.g., quinidine, procainamide) or Class III (e.g., amiodarone, sotalol) antiarrhythmic medications, antipsychotic medications (e.g., chlorpromazine, thioridazine), antibiotics (e.g., gatifloxacin, moxifloxacin), or any other class of medications known to prolong the QTc interval. (Paliperidone label, Warnings and precautions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

The risk is increased with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, meperidine, methadone, busipirone, amphetamines, and St. (Venlafaxine label, Warnings and precautions)

Agonistic Effects (increase in BIORPHEN blood pressure effect) can occur with monoamine oxidase inhibitors (MAOI), oxytocin and oxytocic drugs, tricyclic antidepressants, angiotensin and aldosterone, atropine, steroids, norepinephrine transporter inhibitors, ergot alkaloids. (Phenylephrine label, Drug interactions)

…Ethosuximide, felbamate, oxcarbazepine, methsuximide, topiramate Azoles Fluconazole, ketoconazole, itraconazole, miconazole, voriconazole Antineoplastic agents Capecitabine, fluorouracil Antidepressants Fluoxetine, fluvoxamine, sertraline Gastric acid reducing agents H 2 antagonists (cimetidine), omeprazole Sulfonamides Sulfamethizole, sulfaphenazole, sulfadiazine,… (Phenytoin label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

It is generally believed (though not established in controlled trials) that treating such an episode with an antidepressant alone may increase the likelihood of precipitation of a mixed/manic episode in patients at risk for bipolar disorder. (Quetiapine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

…5-HT3 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 mg) was… (Rifampin label, Drug interactions)

Risperidone - Venlafaxine administered under steady-state conditions at 150 mg/day slightly inhibited the CYP2D6-mediated metabolism of risperidone (administered as a single 1 mg oral dose) to its active metabolite, 9-hydroxyrisperidone, resulting in an approximate 32% increase in risperidone AUC. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

Concomitant use of aspirin, Nonsteroidal Anti-Inflammatory Drugs (NSAIDs), warfarin, and other anticoagulants may add to this risk. (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

• Monoamine oxidase inhibitors and tricyclic antidepressants: Use with extreme caution. (Salmeterol label, Drug interactions)

Concomitant use of other drugs that cause central nervous system (CNS) adverse reactions (e.g., alcohol, sedatives, hypnotics, opiates, and anxiolytics) or have anticholinergic properties (e.g., other belladonna alkaloids, sedating antihistamines, meclizine, tricyclic antidepressants, and muscle relaxants) may increase this effect [see Drug Interactions ( 7.1 )] . (Scopolamine label, Warnings and precautions)

The concurrent use of Xyrem with other CNS depressants, including but not limited to opioid analgesics, benzodiazepines, sedating antidepressants or antipsychotics, sedating anti-epileptic drugs, general anesthetics, muscle relaxants, and/or illicit CNS depressants, may increase the risk of respiratory depression, hypotension, profound sedation, syncope, and… (Sodium oxybate label, Warnings and precautions)

Additive to other QT-prolonging drugs ( 7.1 , 7.2 ) (Sotalol label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

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

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

The benzodiazepines, including temazepam, produce additive CNS-depressant effects when co-administered with other CNS depressants such as alcohol, barbiturates, antipsychotics, sedative/hypnotics, anxiolytics, antidepressants, narcotic analgesics, sedative antihistamines, anticonvulsants, and anesthetics. (Temazepam label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Therefore, the potential exists for a drug interaction between drugs that inhibit CYP2D6-mediated metabolism of venlafaxine, reducing the metabolism of venlafaxine to ODV, resulting in increased plasma concentrations of venlafaxine and decreased concentrations of the active metabolite. (Venlafaxine label, Drug interactions)

Monoamine Oxidase Inhibitors and Tricyclic Antidepressants Terbutaline sulfate should be administered with extreme caution to patients being treated with monoamine oxidase inhibitors or tricyclic antidepressants, or within 2 weeks of discontinuation of such agents, since the action of terbutaline sulfate on the vascular system may be potentiated. (Terbutaline label, Precautions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

• Monoamine oxidase inhibitors and tricyclic antidepressants: Use with extreme caution. (Umeclidinium and vilanterol label, Drug interactions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Also, patients taking diuretics or who are otherwise volume-depleted may be at greater risk [see Use in Specific Populations ( 8.5 )] . (Venlafaxine label, Warnings and precautions)

Metoprolol: Possibly reduced blood-pressure lowering effect despite increased metoprolol plasma levels. (Venlafaxine label, Drug interactions)

Concomitant use of CYP3A4 inhibitors and venlafaxine may increase levels of venlafaxine and ODV. (Venlafaxine label, Drug interactions)

Patients receiving warfarin therapy should be carefully monitored when Venlafaxine Extended-Release Tablets are initiated or discontinued [see Warnings and Precautions ( 5.13 )] . (Venlafaxine label, Drug interactions)

Venlafaxine: Coadministration of a single dose of zaleplon 10 mg and multiple doses of venlafaxine ER (extended release) 150 mg did not result in any significant changes in the pharmacokinetics of either zaleplon or venlafaxine. (Zaleplon label, Drug interactions)

Additive effects occur with concomitant use of other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol), including daytime use [see Drug Interactions (7.1) ] . (Zolpidem label, Warnings and precautions)

Additionally, administration of venlafaxine in a stable regimen did not exaggerate the psychomotor and psychometric effects induced by ethanol in these same subjects when they were not receiving venlafaxine. (Venlafaxine label, Drug interactions)

This finding was confirmed in vivo by clinical drug interaction studies in which venlafaxine did not inhibit the metabolism of several CYP3A4 substrates, including alprazolam, diazepam, and terfenadine. (Venlafaxine label, Drug interactions)

During marketing of venlafaxine hydrochloride extended-release capsules, other SNRI’s (Serotonin and Norepinephrine Reuptake Inhibitors), and SSRI’s (Selective Serotonin Reuptake Inhibitors), there have been spontaneous reports of adverse reactions occurring upon discontinuation of these drugs, particularly when abrupt, including the following: dysphoric mood,… (Venlafaxine label, Warnings and precautions)

Paralytic ileus, hyperthermia and heat stroke, all of which have sometimes been fatal, have occurred in patients taking anticholinergic-type antiparkinsonism drugs, including benztropine mesylate, in combination with phenothiazines and/or tricyclic antidepressants. (Benztropine label, Warnings)

However, there is substantial evidence from placebo-controlled maintenance studies in adults with MDD that antidepressants delay the recurrence of depression. (Brexpiprazole label, Warnings and precautions)

This finding was confirmed in vivo by a clinical drug interaction study in which venlafaxine did not inhibit the metabolism of caffeine, a CYP1A2 substrate. (Venlafaxine label, Drug interactions)

CYP1A2 Venlafaxine did not inhibit CYP1A2 in vitro . (Venlafaxine label, Drug interactions)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

…placebo-controlled trials of adult patients with major depressive disorder, the proportion of patients with shifts in fasting glucose from normal (<100 mg/dL) to high (≥126 mg/dL) was greatest in the VRAYLAR 3 mg per day + antidepressant therapy arm (3.2%) compared with those taking VRAYLAR 1.5 mg per day + antidepressant therapy (2%) or those placebo-treated (1.3%). (Cariprazine label, Warnings and precautions)

Postmarketing Spontaneous Drug Interaction Reports There have been reports of elevated clozapine levels that were temporally associated with adverse reactions, including seizures, following the addition of venlafaxine. (Venlafaxine label, Drug interactions)

CYP1A2 Venlafaxine did not inhibit CYP1A2 in vitro . (Venlafaxine label, Drug interactions)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

In contrast, drugs that are inhibitors of cytochrome P450 isozymes, e.g., antidepressants, may be expected to have little effect on valproate clearance because cytochrome P450 microsomal mediated oxidation is a relatively minor secondary metabolic pathway compared to glucuronidation and beta-oxidation. (Divalproex (valproate) label, Drug interactions)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

…quinidine, procainamide) or Class III (e.g., amiodarone, sotalol) antiarrhythmics, certain antipsychotics (e.g., ziprasidone, iloperidone, clozapine, quetiapine, chlorpromazine), certain antidepressants (e.g., citalopram, fluoxetine), certain antibiotics (e.g., azithromycin, erythromycin, clarithromycin, gatifloxacin, moxifloxacin); and others (e.g., pentamidine, methadone,… (Hydroxyzine label, Precautions)

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)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

In most cases, patients were using concomitant medications (antidepressants, antipsychotics, stimulants, narcotics) that are thought to lower the seizure threshold. (Tiagabine label, Warnings)

Monoamine oxidase inhibitors and tricyclic antidepressants possessing significant anticholinergic activity may intensify the anticholinergic effects of antidyskinetic agents because of the secondary anticholinergic activities of these medications. (Trihexyphenidyl label, Drug interactions)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

In contrast, drugs that are inhibitors of cytochrome P450 isozymes, e.g., antidepressants, may be expected to have little effect on valproate clearance because cytochrome P450 microsomal mediated oxidation is a relatively minor secondary metabolic pathway compared to glucuronidation and beta-oxidation. (Valproic acid label, Drug interactions)

During marketing of venlafaxine hydrochloride extended-release capsules, other SNRI’s (Serotonin and Norepinephrine Reuptake Inhibitors), and SSRI’s (Selective Serotonin Reuptake Inhibitors), there have been spontaneous reports of adverse reactions occurring upon discontinuation of these drugs, particularly when abrupt, including the following: dysphoric mood,… (Venlafaxine label, Warnings and precautions)

CYP2C9 Venlafaxine did not inhibit CYP2C9 in vitro . (Venlafaxine label, Drug interactions)

In addition, no dosage adjustment is necessary for substrates of CYP2D6 (e.g., dextromethorphan, fluoxetine, paroxetine, or venlafaxine), CYP2C9 (e.g., warfarin), CYP2C19 (e.g., omeprazole, warfarin), or CYP3A4 (e.g., dextromethorphan) when coadministered with ABILIFY MAINTENA. (Aripiprazole label, Drug interactions)

Commonly Administered Drugs: Population analysis showed that commonly administered drugs (e.g., selegiline, amantadine, tricyclic antidepressants, benzodiazepines, ibuprofen, thiazides, antihistamines, anticholinergics) did not affect the clearance of ropinirole. (Ropinirole label, Drug interactions)