Version October 2024
Antidepressants increased the risk, compared with placebo, of suicidal thinking and behavior (suicidality) in short-term studies in children, adolescents, and young adults with major depressive disorder (MDD) and other psychiatric disorders. Anyone considering the use of isocarboxazid or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need. Short-term studies did not show an increase in the risk of suicidality with antidepressants compared with placebo in adults older than 24 years; there was a reduction in risk with antidepressants compared with placebo in adults 65 years and older. Depression and certain other psychiatric disorders are associated with increases in the risk of suicide. Closely monitor and observe patients of all ages who are started on antidepressant therapy for clinical worsening, suicidality, or unusual changes in behavior. Advise families and caregivers of the need for close observation and communication with their health care provider. Isocarboxazid is not approved for use in pediatric patients.
Pooled analyses of short-term (4- to 16-weeks), placebo-controlled trials of 9 antidepressant drugs (selective serotonin reuptake inhibitors [SSRIs] and others) in children and adolescents with MDD, obsessive-compulsive disorder (OCD), or other psychiatric disorders (a total of 24 trials involving more than 4,400 patients) have revealed a greater risk of adverse reactions representing suicidal thinking or behavior (suicidality) during the first few months of treatment in those receiving antidepressants. The average risk of such reactions in patients receiving antidepressants was 4%, twice the placebo risk of 2%. No suicides occurred in these trials.
Major depressive disorder (unipolar) (alternative agent): Oral: Initial: 10 mg twice daily; may increase daily dose based on response and tolerability in increments of 10 mg every 2 to 4 days up to 40 mg/day by the end of the first week (divided into 2 to 4 doses per day). After first week, may increase by up to 20 mg/week to a maximum of 60 mg/day. May take 3 to 6 weeks to see effects. If no response obtained within 6 weeks, additional titration is unlikely to be beneficial. Note: Use caution with doses >40 mg/day; experience is limited.
Discontinuation of therapy: When discontinuing antidepressant treatment that has lasted for ≥4 weeks, gradually taper the dose (eg, over 2 to 4 weeks) to minimize withdrawal symptoms and detect reemerging symptoms (Ref). For brief treatment (eg, 2 to 3 weeks) may taper over 1 to 2 weeks; <2 weeks treatment generally does not warrant tapering (Ref). Reasons for a slower taper (eg, over 4 weeks) include history of antidepressant withdrawal symptoms or high doses of antidepressants (Ref). More severe symptoms have been associated with monoamine oxidase inhibitors (MAOIs); more conservative tapers may be necessary. If intolerable withdrawal symptoms occur, resume the previously prescribed dose and/or decrease dose at a more gradual rate (Ref). Select patients (eg, those with a history of discontinuation syndrome) on long-term treatment (>6 months) may benefit from tapering over >3 months (Ref). Evidence supporting ideal taper rates is limited (Ref).
Switching to or from isocarboxazid, another MAOI, or an alternative antidepressant:
Allow 14 days to elapse between discontinuing an alternative antidepressant without long half-life metabolites (eg, tricyclic antidepressants, paroxetine, fluvoxamine, venlafaxine) or MAOI and initiation of isocarboxazid.
Allow 5 weeks to elapse between discontinuing fluoxetine (long half-life metabolites) and initiation of isocarboxazid.
Allow at least 7 to 14 days to elapse between discontinuing isocarboxazid and initiation of an alternative antidepressant or MAOI.
Dosage adjustment for concomitant therapy: Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Use is contraindicated in severe impairment. Use with caution in mild-to-moderate impairment to avoid accumulation.
Use is contraindicated in patients with a history of liver disease or abnormal liver function tests.
Refer to adult dosing.
The following adverse drug reactions and incidences are derived from product labeling unless otherwise specified.
>10%: Nervous system: Dizziness (29%), headache (15%)
1% to 10%:
Cardiovascular: Orthostatic hypotension (4%), palpitations (2%), syncope (2%)
Dermatologic: Diaphoresis (2%)
Gastrointestinal: Constipation (7%), diarrhea (2%), nausea (6%), xerostomia (9%)
Genitourinary: Erectile dysfunction (2%), urinary frequency (2%), urinary hesitancy (1%)
Nervous system: Anxiety (2%), chills (2%), drowsiness (4%), feeling of heaviness (2%), forgetfulness (2%), hyperactive behavior (2%), lethargy (2%), myoclonus (2%), paresthesia (2%), sedated state (2%), sleep disturbance (5%), tremor (4%)
Frequency not defined:
Cardiovascular: Hypotension
Hepatic: Abnormal liver function, jaundice
Nervous system: Decreased seizure threshold, suicidal ideation, suicidal tendencies
Postmarketing:
Dermatologic: Skin photosensitivity, spider telangiectasia
Endocrine & metabolic: SIADH
Gastrointestinal: Melanoglossia
Genitourinary: Dysuria, sexual disorder, urinary incontinence, urinary retention
Hematologic & oncologic: Hematologic abnormality
Nervous system: Akathisia, ataxia, coma, euphoria, hallucination, neuritis
Hypersensitivity to isocarboxazid or any component of the formulation; cardiovascular disease (including hypertension); cerebrovascular defect (suspected or confirmed); history of headache; history of hepatic disease or abnormal liver function tests; pheochromocytoma; severe renal impairment
Concurrent use of antihistamines, antihypertensives, bupropion, buspirone, caffeine (excessive use), CNS depressants (including ethanol and opioids), dextromethorphan, diuretics, general anesthesia used during elective surgery (discontinue isocarboxazid ≥10 days prior to elective surgery), local vasoconstrictors, meperidine, MAO inhibitors or dibenzazepine derivatives (eg, amitriptyline, clomipramine, desipramine, imipramine, nortriptyline, protriptyline, doxepin, carbamazepine, cyclobenzaprine, amoxapine, maprotiline, trimipramine), SSRIs or SNRIs, spinal anesthesia (hypotension may be exaggerated), sympathomimetics (including amphetamines, cocaine, phenylephrine, pseudoephedrine) or related compounds (methyldopa, reserpine, levodopa, tryptophan), or foods high in tyramine content
Significant drug interactions exist, requiring dose/frequency adjustment or avoidance. Consult drug interactions database for more information.
Bupropion: At least 14 days should elapse between MAO inhibitor discontinuation and bupropion initiation.
Buspirone: At least 10 days should elapse between isocarboxazid discontinuation and buspirone initiation.
MAO inhibitors or dibenzazepine derivatives: At least 1 week should elapse between the use of another MAO inhibitor or dibenzazepine derivative and isocarboxazid use.
Meperidine: At least 2-3 weeks should elapse between MAO inhibitor discontinuation and meperidine use.
SSRIs or SNRIs: At least 2 weeks should elapse between the discontinuation of sertraline or paroxetine and the initiation of isocarboxazid. At least 5 weeks should elapse between the discontinuation of fluoxetine and the initiation of isocarboxazid. At least 5 days to 1 week should elapse between discontinuation of a SNRI (timeframe dependent on specific SNRI) and the initiation of isocarboxazid. At least 2 weeks should elapse between the discontinuation of isocarboxazid and the initiation of SSRIs or SNRIs.
Major psychiatric warnings:
• Suicidal thinking/behavior: [US Boxed Warning]: Antidepressants increase the risk of suicidal thinking and behavior in children, adolescents, and young adults (18 to 24 years of age) with major depressive disorder (MDD) and other psychiatric disorders; consider risk prior to prescribing. Short-term studies did not show an increased risk in patients >24 years of age and showed a decreased risk in patients ≥65 years. Closely monitor patients for clinical worsening, suicidality, or unusual changes in behavior, particularly during the initial 1 to 2 months of therapy or during periods of dosage adjustments (increases or decreases); the patient's family or caregiver should be instructed to closely observe the patient and communicate condition with health care provider. A medication guide concerning the use of antidepressants should be dispensed with each prescription. Isocarboxazid is FDA approved for the treatment of depression in children ≥16 years of age.
- The possibility of a suicide attempt is inherent in patients with major depression and may persist until remission occurs. Worsening depression and severe abrupt suicidality that are not part of the presenting symptoms may require discontinuation or modification of drug therapy. Use caution in high-risk patients during initiation of therapy.
- Prescriptions should be written for the smallest quantity consistent with good patient care. The patient's family or caregiver should be alerted to monitor patients for the emergence of suicidality and associated behaviors such as anxiety, agitation, panic attacks, insomnia, irritability, hostility, impulsivity, akathisia, hypomania, and mania; patients should be instructed to notify their health care provider if any of these symptoms or worsening depression or psychosis occur.
Concerns related to adverse effects:
• Hypertensive crisis: Cases of hypertensive crisis (sometimes fatal) have occurred; symptoms include severe headache, nausea/vomiting, neck stiffness/soreness, photophobia, and sweating. Monitor blood pressure closely in all patients. May occur with foods/supplements high in tyramine, tryptophan, phenylalanine, or tyrosine content; treatment with phentolamine is recommended for hypertensive crisis.
• Orthostatic hypotension: May cause orthostatic hypotension; use with caution in patients at risk of this effect or in those who would not tolerate transient hypotensive episodes (cerebrovascular disease, cardiovascular disease, hypovolemia, or concurrent medication use which may predispose to hypotension/bradycardia).
Disease-related concerns:
• Angina: Monoamine oxidase inhibitors (MAOIs) may mask anginal pain.
• Diabetes: Use with caution in patients with diabetes mellitus receiving insulin or glycemic agents; sensitization to the effects of insulin may occur, monitor blood glucose closely.
• Substance use disorder: Use with caution in patients with a history of substance use disorder; potential for drug dependency exists, especially in patients using excessive doses.
• Hepatic impairment: Use is contraindicated in patients with a history of liver disease or abnormal LFTs. Decreased hepatic function may result in decreased clearance and increased half-life and plasma concentrations. Consider switching to a different antidepressant class due to side effect profile, risk of worsening hepatotoxicity and apparent pharmacokinetic changes in chronic liver disease (Mullish 2014).
• Mania/hypomania: May precipitate a shift to mania or hypomania in patients with bipolar disorder. Monotherapy in patients with bipolar disorder should be avoided. Combination therapy with an antidepressant and a mood stabilizer should also be avoided in acute mania or mixed episodes, as well as maintenance treatment in bipolar disorder due to the mood-destabilizing effects of antidepressants (CANMAT [Yatham 2018]; WFSBP [Grunze 2018]). Patients presenting with depressive symptoms should be screened for bipolar disorder. Isocarboxazid is not FDA approved for the treatment of bipolar depression.
• Renal impairment: Use with caution in patients with renal impairment; contraindicated in patients with severe impairment.
• Seizure disorder: Use with caution in patients at risk of seizures, including those with a history of seizures, head trauma, brain damage, alcoholism, or concurrent therapy with medications which may lower seizure threshold.
• Thyroid dysfunction: Use with caution in patients with hyperthyroidism.
Special populations:
• Anxiety and agitation: May aggravate coexisting symptoms in depression, such as anxiety and agitation.
• Surgical patients: According to the manufacturer isocarboxazid use within 10 days prior elective surgery is contraindicated. The decision to continue or withhold MAOIs must be done in collaboration with the patient's psychiatrist. Currently, an MAO-safe anesthetic technique which excludes the use of meperidine and indirect-acting adrenergic agonists is recommended for patients requiring continued MAOI therapy (Huyse 2006).
Other warnings/precautions:
• Discontinuation syndrome: Abrupt discontinuation or interruption of antidepressant therapy has been associated with a discontinuation syndrome. Symptoms with MAOIs commonly include aggressiveness, agitation, delirium, confusion, depression associated with cognitive impairment, disorientation, hypomania, insomnia, irritability, mania, myoclonic jerks, seizures, and thought disorganization (eg, paranoid delusions, hallucinations). Greater risks for developing a discontinuation syndrome have been associated with high doses, longer durations of treatment, and abrupt discontinuation (APA 2010; Haddad 2001; Lejoyeux 1997).
• Electroconvulsive therapy: May increase the risks associated with electroconvulsive therapy; consider discontinuing, when possible, prior to ECT treatment.
• Myelography: Discontinue at least 48 hours prior to myelography; do not resume for at least 24 hours postprocedure.
Excipient information presented when available (limited, particularly for generics); consult specific product labeling.
Tablet, Oral:
Marplan: 10 mg [scored]
No
Tablets (Marplan Oral)
10 mg (per each): $5.68
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An FDA-approved patient medication guide, which is available with the product information and at https://www.accessdata.fda.gov/drugsatfda_docs/label/2018/011961s045lbl.pdf#page=16, must be dispensed with this medication.
Major depressive disorder (unipolar): Treatment of unipolar major depressive disorder.
Inhibits Monoamine Oxidase
Note: Interacting drugs may not be individually listed below if they are part of a group interaction (eg, individual drugs within “CYP3A4 Inducers [Strong]” are NOT listed). For a complete list of drug interactions by individual drug name and detailed management recommendations, use the drug interactions program by clicking on the “Launch drug interactions program” link above.
Agents with Blood Glucose Lowering Effects: Monoamine Oxidase Inhibitors may enhance the hypoglycemic effect of Agents with Blood Glucose Lowering Effects. Risk C: Monitor therapy
Alcohol (Ethyl): May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Alfuzosin: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Alosetron: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Alpha-/Beta-Agonists (Indirect-Acting): Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Alpha-/Beta-Agonists (Indirect-Acting). While linezolid is expected to interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to linezolid specific monographs for details. Risk X: Avoid combination
Alpha1-Agonists: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Alpha1-Agonists. While linezolid is expected to interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to linezolid specific monographs for details. Risk X: Avoid combination
Altretamine: May enhance the orthostatic hypotensive effect of Monoamine Oxidase Inhibitors (Antidepressant). Risk C: Monitor therapy
Amifampridine: Agents With Seizure Threshold Lowering Potential may enhance the neuroexcitatory and/or seizure-potentiating effect of Amifampridine. Risk C: Monitor therapy
Amifostine: Blood Pressure Lowering Agents may enhance the hypotensive effect of Amifostine. Management: When used at chemotherapy doses, hold blood pressure lowering medications for 24 hours before amifostine administration. If blood pressure lowering therapy cannot be held, do not administer amifostine. Use caution with radiotherapy doses of amifostine. Risk D: Consider therapy modification
Amisulpride (Oral): May enhance the hypotensive effect of Hypotension-Associated Agents. Risk C: Monitor therapy
Amisulpride (Oral): Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Amisulpride (Oral). Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Amphetamines: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Amphetamines. While linezolid and tedizolid may interact via this mechanism, management recommendations differ from other monoamine oxidase inhibitors. Refer to monographs specific to those agents for details. Risk X: Avoid combination
Antiemetics (5HT3 Antagonists): May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Antihypertensive Agents: Isocarboxazid may enhance the antihypertensive effect of Antihypertensive Agents. Risk X: Avoid combination
Antipsychotic Agents: Serotonergic Agents (High Risk) may enhance the adverse/toxic effect of Antipsychotic Agents. Specifically, serotonergic agents may enhance dopamine blockade, possibly increasing the risk for neuroleptic malignant syndrome. Antipsychotic Agents may enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Risk C: Monitor therapy
Apraclonidine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Apraclonidine. Monoamine Oxidase Inhibitors may increase the serum concentration of Apraclonidine. Risk X: Avoid combination
Arginine: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
ARIPiprazole: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ARIPiprazole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
ARIPiprazole Lauroxil: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ARIPiprazole Lauroxil. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Asenapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Asenapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Atomoxetine: Monoamine Oxidase Inhibitors may enhance the neurotoxic (central) effect of Atomoxetine. Risk X: Avoid combination
Atropine (Ophthalmic): Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Atropine (Ophthalmic). Risk X: Avoid combination
Barbiturates: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Benperidol: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Benperidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Benperidol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Benzhydrocodone: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: The use of benzhydrocodone is not recommended for patients taking monoamine oxidase inhibitors (MAOIs) or within 14 days of MAOI discontinuation. If coadministration is required, use test doses and frequent titration of small benzhydrocodone. Risk D: Consider therapy modification
Beta2-Agonists: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Beta2-Agonists. Risk C: Monitor therapy
Betahistine: Monoamine Oxidase Inhibitors may increase the serum concentration of Betahistine. Risk C: Monitor therapy
Bezafibrate: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Bezafibrate. Risk X: Avoid combination
Blonanserin: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Blonanserin. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Blood Pressure Lowering Agents: May enhance the hypotensive effect of Hypotension-Associated Agents. Risk C: Monitor therapy
Brexanolone: Isocarboxazid may enhance the CNS depressant effect of Brexanolone. Risk C: Monitor therapy
Brexpiprazole: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Brexpiprazole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Brimonidine (Ophthalmic): Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Brimonidine (Ophthalmic). Monoamine Oxidase Inhibitors may increase the serum concentration of Brimonidine (Ophthalmic). Risk C: Monitor therapy
Brimonidine (Topical): Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Brimonidine (Topical). Monoamine Oxidase Inhibitors may increase the serum concentration of Brimonidine (Topical). Risk C: Monitor therapy
Brimonidine (Topical): May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Bromperidol: May diminish the hypotensive effect of Blood Pressure Lowering Agents. Blood Pressure Lowering Agents may enhance the hypotensive effect of Bromperidol. Risk X: Avoid combination
Buprenorphine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
BuPROPion: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of BuPROPion. Risk X: Avoid combination
BusPIRone: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Butorphanol: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
CarBAMazepine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Management: Do not use carbamazepine during, or within 14 days of discontinuing, treatment with a monoamine oxidase inhibitor. Risk X: Avoid combination
Carbinoxamine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Carbinoxamine. Specifically, the anticholinergic effects of carbinoxamine may be enhanced and prolonged. Risk X: Avoid combination
Cariprazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Cariprazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Cerebrolysin: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk C: Monitor therapy
Chlorphenesin Carbamate: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk C: Monitor therapy
ChlorproMAZINE: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of ChlorproMAZINE. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Clemastine: Monoamine Oxidase Inhibitors may enhance the anticholinergic effect of Clemastine. Risk C: Monitor therapy
Clothiapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Clothiapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
CloZAPine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of CloZAPine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Cocaine (Topical): Isocarboxazid may enhance the vasoconstricting effect of Cocaine (Topical). Risk X: Avoid combination
Codeine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Codeine. Risk X: Avoid combination
COMT Inhibitors: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Management: Avoid coadministration of COMT inhibitors and nonselective monoamine oxidase inhibitors (MAOIs) (eg, isocarboxazid, phenelzine, tranylcypromine, linezolid, methylene blue) whenever possible. Risk D: Consider therapy modification
Cyclobenzaprine: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Cyproheptadine: Monoamine Oxidase Inhibitors may enhance the anticholinergic effect of Cyproheptadine. Cyproheptadine may diminish the serotonergic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Dapoxetine: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Do not use serotonergic agents (high risk) with dapoxetine or within 7 days of serotonergic agent discontinuation. Do not use dapoxetine within 14 days of monoamine oxidase inhibitor use. Dapoxetine labeling lists this combination as contraindicated. Risk X: Avoid combination
Deutetrabenazine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Deutetrabenazine. Risk X: Avoid combination
Dexmethylphenidate: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Dexmethylphenidate. Risk X: Avoid combination
Dextromethorphan: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This may cause serotonin syndrome. Risk X: Avoid combination
Diamorphine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Diamorphine. Risk X: Avoid combination
Diazoxide: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Diethylpropion: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Diethylpropion. Risk X: Avoid combination
Dihydrocodeine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Management: Consider avoiding use of dihydrocodeine while the patient is taking monoamine oxidase inhibitors (MAOIs) and for 2 weeks after MAOI discontinuation. Risk D: Consider therapy modification
Diphenoxylate: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Diuretics: Isocarboxazid may enhance the hypotensive effect of Diuretics. Risk X: Avoid combination
Domperidone: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Domperidone. Monoamine Oxidase Inhibitors may diminish the therapeutic effect of Domperidone. Domperidone may diminish the therapeutic effect of Monoamine Oxidase Inhibitors. Risk C: Monitor therapy
DOPamine: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of DOPamine. Management: Initiate dopamine at no greater than one-tenth (1/10) of the usual dose in patients who are taking (or have taken within the last 2 to 3 weeks) monoamine oxidase inhibitors. Monitor for an exaggerated hypertensive response to dopamine. Risk D: Consider therapy modification
Doxapram: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Doxapram. Risk C: Monitor therapy
Doxylamine: Monoamine Oxidase Inhibitors may enhance the anticholinergic effect of Doxylamine. Risk X: Avoid combination
DroPERidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of DroPERidol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Droxidopa: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Droxidopa. Risk X: Avoid combination
EPINEPHrine (Oral Inhalation): Monoamine Oxidase Inhibitors may enhance the hypertensive effect of EPINEPHrine (Oral Inhalation). Risk X: Avoid combination
Epinephrine (Racemic): Monoamine Oxidase Inhibitors (Antidepressant) may enhance the adverse/toxic effect of Epinephrine (Racemic). Risk X: Avoid combination
EPINEPHrine (Systemic): Monoamine Oxidase Inhibitors may enhance the hypertensive effect of EPINEPHrine (Systemic). Risk C: Monitor therapy
Ergot Derivatives: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Esketamine: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk C: Monitor therapy
Fenfluramine: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
FentaNYL: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Flupentixol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Flupentixol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
FluPHENAZine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of FluPHENAZine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Gepirone: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Guanethidine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Haloperidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Haloperidol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Herbal Products with Blood Pressure Lowering Effects: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
HYDROcodone: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of HYDROcodone. HYDROcodone may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: Consider alternatives to this combination when possible. If coadministration is required, use test doses, titrate small doses frequently, and monitor patients closely for evidence of serotonergic and opioid toxicities. Risk D: Consider therapy modification
HYDROmorphone: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of HYDROmorphone. Management: Coadministration of hydromorphone and monoamine oxidase (MAO) inhibitors (or within 14 days of stopping an MAO inhibitor) is not recommended. If required, use test doses, titrate small doses frequently, and monitor for CNS and respitatory depression. Risk D: Consider therapy modification
Hypotension-Associated Agents: Blood Pressure Lowering Agents may enhance the hypotensive effect of Hypotension-Associated Agents. Risk C: Monitor therapy
Iloperidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iloperidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Iloperidone: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Indoramin: Monoamine Oxidase Inhibitors may enhance the hypotensive effect of Indoramin. Risk X: Avoid combination
Inhalational Anesthetics: Isocarboxazid may enhance the hypotensive effect of Inhalational Anesthetics. Risk X: Avoid combination
Iobenguane Radiopharmaceutical Products: Monoamine Oxidase Inhibitors may diminish the therapeutic effect of Iobenguane Radiopharmaceutical Products. Management: Discontinue all drugs that may inhibit or interfere with catecholamine transport or uptake for at least 5 biological half-lives before iobenguane administration. Do not administer these drugs until at least 7 days after each iobenguane dose. Risk X: Avoid combination
Iohexol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iohexol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iohexol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification
Iomeprol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iomeprol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iomeprol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification
Iopamidol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Iopamidol. Specifically, the risk for seizures may be increased. Management: Discontinue agents that may lower the seizure threshold 48 hours prior to intrathecal use of iopamidol. Wait at least 24 hours after the procedure to resume such agents. In nonelective procedures, consider use of prophylactic antiseizure drugs. Risk D: Consider therapy modification
Isometheptene: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Isoproterenol: Monoamine Oxidase Inhibitors may enhance the therapeutic effect of Isoproterenol. Risk C: Monitor therapy
Lasmiditan: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Levodopa-Foslevodopa: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Of particular concern is the development of hypertensive reactions when levodopa is used with nonselective MAOI. Risk X: Avoid combination
Levomethadone: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Levonordefrin: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Levonordefrin. Management: Avoid the use of levonordefrin during or within 2 weeks of treatment with a monoamine oxidase inhibitor whenever possible. If levonordefrin cannot be avoided during this period, monitor closely for enhanced or prolonged increases in blood pressure. Risk D: Consider therapy modification
Linezolid: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Lithium: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Lithium. This could result in serotonin syndrome. Management: Consider alternatives to this drug combination. If combined, monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes). Risk D: Consider therapy modification
Lorcaserin (Withdrawn From US Market): May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Lormetazepam: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Loxapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Loxapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Lumateperone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Lumateperone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Lurasidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Lurasidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Maprotiline: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Meperidine: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Meptazinol: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Meptazinol. Risk X: Avoid combination
Mequitazine: Monoamine Oxidase Inhibitors may enhance the anticholinergic effect of Mequitazine. Risk X: Avoid combination
Metaraminol: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Metaraminol. Risk C: Monitor therapy
Metaxalone: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Methadone: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Methotrimeprazine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Methotrimeprazine. Specifically, monoamine oxidase inhibitors may enhance dopamine blockade, possible increasing the risk for neuroleptic malignant syndrome. Methotrimeprazine may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Methyldopa: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Methyldopa. Risk X: Avoid combination
Methylene Blue: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Methylene Blue. This could result in serotonin syndrome. Risk X: Avoid combination
Methylphenidate: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Methylphenidate. Risk X: Avoid combination
Metoclopramide: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Mianserin: Monoamine Oxidase Inhibitors may enhance the neurotoxic effect of Mianserin. Risk X: Avoid combination
Mivacurium: Monoamine Oxidase Inhibitors may increase the serum concentration of Mivacurium. Risk C: Monitor therapy
Molindone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Molindone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Molsidomine: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Monoamine Oxidase Inhibitors (Antidepressant): May enhance the hypertensive effect of other Monoamine Oxidase Inhibitors (Antidepressant). Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of other Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Monoamine Oxidase Inhibitors (Type B): Monoamine Oxidase Inhibitors (Antidepressant) may enhance the hypertensive effect of Monoamine Oxidase Inhibitors (Type B). Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Type B). This could result in serotonin syndrome. Risk X: Avoid combination
Morphine (Systemic): Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Morphine (Systemic). Risk X: Avoid combination
Naftopidil: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Nalbuphine: Monoamine Oxidase Inhibitors may enhance the CNS depressant effect of Nalbuphine. Nalbuphine may enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Nalbuphine may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: Use of nalbuphine is not recommended in patients taking MAOIs, or within 14 days of stopping MAOI therapy. If urgent nalbuphine use is needed, use test doses and frequent titration while monitoring blood pressure, CNS depression, and serotonergic toxicity Risk D: Consider therapy modification
Nefazodone: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Nefazodone. This could result in serotonin syndrome. Risk X: Avoid combination
Nefopam: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Nefopam. Risk X: Avoid combination
Nicergoline: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Nicorandil: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Norepinephrine: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Norepinephrine. Risk C: Monitor therapy
Normethadone: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Normethadone. Risk X: Avoid combination
Obinutuzumab: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Management: Consider temporarily withholding blood pressure lowering medications beginning 12 hours prior to obinutuzumab infusion and continuing until 1 hour after the end of the infusion. Risk D: Consider therapy modification
OLANZapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of OLANZapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Ondansetron: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Opicapone: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Opioid Agonists: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Opium: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Opium. Risk X: Avoid combination
Oxitriptan: Serotonergic Agents (High Risk) may enhance the serotonergic effect of Oxitriptan. This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
OxyCODONE: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: Use of oxycodone is not recommended for patients taking MAOIs or within 14 days of MAOI discontinuation. If combined, use test doses and frequent titration of small doses while monitoring blood pressure, CNS depression, and signs of serotonin syndrome. Risk D: Consider therapy modification
OxyMORphone: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Ozanimod: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Paliperidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Paliperidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Pentoxifylline: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Periciazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Periciazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Perphenazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Perphenazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Pheniramine: May enhance the anticholinergic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Pholcodine: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Phosphodiesterase 5 Inhibitors: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Pimozide: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Pimozide. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Pipamperone [INT]: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Pipamperone [INT]. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Pizotifen: Monoamine Oxidase Inhibitors may enhance the anticholinergic effect of Pizotifen. Risk X: Avoid combination
Polyethylene Glycol-Electrolyte Solution: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Polyethylene Glycol-Electrolyte Solution. Specifically, the risk of seizure may be increased. Risk C: Monitor therapy
Procarbazine: May enhance the adverse/toxic effect of Isocarboxazid. Risk X: Avoid combination
Prochlorperazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Prochlorperazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Promazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Promazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Prostacyclin Analogues: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Psilocybin: Antidepressants may diminish the therapeutic effect of Psilocybin. Risk C: Monitor therapy
QUEtiapine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of QUEtiapine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Quinagolide: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Ramosetron: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Reboxetine: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Reboxetine. Risk X: Avoid combination
Remifentanil: Monoamine Oxidase Inhibitors may enhance the adverse/toxic effect of Remifentanil. Specifically, the risk for opioid toxicity (eg, respiratory depression) may be increased. Remifentanil may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Management: The use of remifentanil is not recommended for patients taking monoamine oxidase inhibitors (MAOIs) or within 14 days of MAOI discontinuation. If coadministration is required, use test doses and titrate small doses of remifentanil frequently. Risk D: Consider therapy modification
RisperiDONE: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of RisperiDONE. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Selective Serotonin Reuptake Inhibitors: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Serotonergic Non-Opioid CNS Depressants: May enhance the serotonergic effect of Monoamine Oxidase Inhibitors (Antidepressant). This could result in serotonin syndrome. Risk X: Avoid combination
Serotonin 5-HT1D Receptor Agonists (Triptans): May enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Monoamine Oxidase Inhibitors may increase the serum concentration of Serotonin 5-HT1D Receptor Agonists (Triptans). Risk X: Avoid combination
Serotonin/Norepinephrine Reuptake Inhibitors: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Serotonin/Norepinephrine Reuptake Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Sertindole: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sertindole. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Silodosin: May enhance the hypotensive effect of Blood Pressure Lowering Agents. Risk C: Monitor therapy
Sodium Phosphates: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sodium Phosphates. Specifically, the risk of seizure or loss of consciousness may be increased in patients with significant sodium phosphate-induced fluid or electrolyte abnormalities. Risk C: Monitor therapy
Solriamfetol: Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Solriamfetol. Risk X: Avoid combination
St John's Wort: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. St John's Wort may decrease the serum concentration of Serotonergic Agents (High Risk). Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
SUFentanil: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Specifically, the risk for serotonin syndrome or opioid toxicities (eg, respiratory depression, coma) may be increased. Management: Sufentanil should not be used with monoamine oxidase (MAO) inhibitors (or within 14 days of stopping an MAO inhibitor) due to the potential for serotonin syndrome and/or excessive CNS depression. Risk X: Avoid combination
Sulpiride: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Sulpiride. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Syrian Rue: May enhance the serotonergic effect of Serotonergic Agents (High Risk). This could result in serotonin syndrome. Management: Monitor for signs and symptoms of serotonin syndrome/serotonin toxicity (eg, hyperreflexia, clonus, hyperthermia, diaphoresis, tremor, autonomic instability, mental status changes) when these agents are combined. Risk C: Monitor therapy
Tapentadol: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Specifically, the additive effects of norepinephrine may lead to adverse cardiovascular effects. Tapentadol may enhance the serotonergic effect of Monoamine Oxidase Inhibitors. This could result in serotonin syndrome. Risk X: Avoid combination
Tetrabenazine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Tetrahydrozoline (Nasal): Monoamine Oxidase Inhibitors may enhance the hypertensive effect of Tetrahydrozoline (Nasal). Risk X: Avoid combination
Thioridazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Thioridazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Thiothixene: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Thiothixene. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Tianeptine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
TraMADol: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the adverse/toxic effect of TraMADol. Specifically, the risk for serotonin syndrome/serotonin toxicity and seizures may be increased.. Risk X: Avoid combination
Tricyclic Antidepressants: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Tricyclic Antidepressants. This could result in serotonin syndrome. Risk X: Avoid combination
Trifluoperazine: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Trifluoperazine. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Tryptophan: Monoamine Oxidase Inhibitors (Antidepressant) may enhance the serotonergic effect of Tryptophan. This could result in serotonin syndrome. Risk X: Avoid combination
Tyrosine: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Valbenazine: May enhance the adverse/toxic effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Viloxazine: May enhance the hypertensive effect of Monoamine Oxidase Inhibitors. Risk X: Avoid combination
Ziprasidone: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Ziprasidone. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Zuclopenthixol: Agents With Seizure Threshold Lowering Potential may enhance the adverse/toxic effect of Zuclopenthixol. Specifically, the risk of seizures may be increased. Risk C: Monitor therapy
Concurrent ingestion of foods rich in tyramine, dopamine, tyrosine, phenylalanine, tryptophan, or caffeine may cause sudden and severe high blood pressure (hypertensive crisis or serotonin syndrome). Management: Avoid tyramine-containing foods (aged or matured cheese, air-dried or cured meats including sausages and salamis; fava or broad bean pods, tap/draft beers, Marmite concentrate, sauerkraut, soy sauce, and other soybean condiments). Food's freshness is also an important concern; improperly stored or spoiled food can create an environment in which tyramine concentrations may increase (Walker 1996). Avoid foods containing dopamine, tyrosine, phenylalanine, tryptophan, or caffeine.
Animal reproduction studies have not been conducted.
Pregnant women exposed to antidepressants during pregnancy are encouraged to enroll in the National Pregnancy Registry for Antidepressants (NPRAD). Women 18 to 45 years of age or their health care providers may contact the registry by calling 844-405-6185. Enrollment should be done as early in pregnancy as possible.
It is not known if isocarboxazid is present in breast milk. The manufacturer recommends using in women who are nursing only if clearly needed.
Avoid tyramine-containing foods/beverages. Some examples include aged or matured cheese, air-dried or cured meats (including sausages and salamis), fava or broad bean pods, tap/draft beers, Marmite concentrate, sauerkraut, soy sauce and other soybean condiments. Food's freshness is also an important concern; improperly stored or spoiled food can create an environment where tyramine concentrations may increase (Walker 1996).
Renal function (baseline, periodic); liver function (baseline, periodic); blood pressure, heart rate; mood, suicidal ideation (especially at the beginning of therapy or when doses are increased or decreased)
Thought to act by increasing endogenous concentrations of epinephrine, norepinephrine, dopamine, and serotonin through inhibition of the enzyme (monoamine oxidase) responsible for the breakdown of these neurotransmitters
Onset of action: Depression: Initial effects may be observed within 1 to 2 weeks of treatment, with continued improvements through 4 to 6 weeks (Papakostas 2006; Posternak 2005; Szegedi 2009).
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