Doxepin and Selegiline interaction

Doxepin 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 Doxepin (Silenor) label · effective 2026-04-21

Major

Co-administration with Monoamine Oxidase Inhibitors (MAOIs): Do not administer if patient is taking MAOIs or has used MAOIs within the past two weeks.

Contraindicationsby drug classView label on DailyMed
Major

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) Serious side effects and even death have been reported following the concomitant use of certain drugs with MAO inhibitors.

Contraindicationsby drug classView label on DailyMed
Major

Do not administer SILENOR if patient is currently on MAOIs or has used MAOIs within the past two weeks.

Contraindicationsby drug classView label on DailyMed
Major

The exact length of time may vary depending on the particular MAOI dosage and duration of treatment.

Contraindicationsby drug classView label on DailyMed
Major

DRUG INTERACTIONS MAO inhibitors: SILENOR should not be administered in patients on MAOIs within the past two weeks.

Drug interactionsby drug classView label on DailyMed

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

Major

John’s wort or cyclobenzaprine (a tricyclic muscle relaxant).

Contraindicationsby drug classView label on DailyMed
Major

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

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

Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.

Open in the checker

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.