Naltrexone and bupropion and Selegiline interaction

Naltrexone and bupropion and Selegiline: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Naltrexone and bupropion (Contrave Extended-Release) label · effective 2025-11-10

Major

…(e.g., buprenorphine) use, or acute opiate withdrawal [see Warnings and Precautions (5.4) and Drug Interactions (7.2) ] Patients undergoing an abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs [see Warnings and Precautions (5.3) and Drug Interactions (7.7) ] Concomitant administration of monoamine oxidase inhibitors (MAOI).

Contraindicationsby drug classView label on DailyMed
Major

At least 14 days should elapse between discontinuation of MAOI and initiation of treatment with CONTRAVE.

Contraindicationsby drug classView label on DailyMed
Major

There is an increased risk of hypertensive reactions when CONTRAVE is used concomitantly with MAOIs.

Contraindicationsby drug classView label on DailyMed
Major

Starting CONTRAVE in a patient treated with reversible MAOIs such as linezolid or intravenous methylene blue is also contraindicated [see Dosage and Administration (2.4) , Drug Interactions (7.1) ] Known allergy to bupropion, naltrexone or any other component of CONTRAVE.

Contraindicationsby drug classView label on DailyMed
Major

During or within 14 days of taking monoamine oxidase inhibitors (MAOI) ( 4 )

Contraindicationsby drug classView label on DailyMed

From the Selegiline (ZELAPAR) label · effective 2021-06-01

Major

• May cause serotonin syndrome when used with antidepressants (5.2)

Warnings and precautionsby drug classView label on DailyMed
Major

Serotonin Syndrome Serotonin syndrome and hyperpyrexia have been reported with the combined treatment of an antidepressant (e.g., selective serotonin reuptake inhibitors-SSRIs, serotonin-norepinephrine reuptake inhibitors-SNRIs, tricyclic antidepressants, tetracyclic antidepressants, triazolopyridine antidepressants) and a non-selective MAOI (e.g., phenelzine,…

Warnings and precautionsby drug classView label on DailyMed
Major

In the post-marketing period, fatal and non-fatal cases of serotonin syndrome have been reported in patients treated with antidepressants concomitantly with ZELAPAR [see Contraindications (4) and Drug Interactions ( 7.1 , 7.2 , 7.3 )] .

Warnings and precautionsby drug classView label on DailyMed
Major

Because the mechanisms responsible for these reactions are not fully understood, avoid the combination of ZELAPAR with any antidepressant.

Warnings and precautionsby drug classView label on DailyMed
Moderate

…allow concomitant use of any selective serotonin re-uptake inhibitor (e.g., fluoxetine-Prozac, fluvoxamine-Luvox, paroxetine-Paxil, sertraline, venlafaxine-Effexor, or nefazodone-Serzone) or any non-selective serotonin reuptake inhibiting antidepressant drug (except when taken at a low dose and only at night for the purpose of effective sleep) with ZELAPAR.

Warnings and precautionsby drug classView label on DailyMed

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.