Desipramine and Levomilnacipran interaction

Desipramine and Levomilnacipran: 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 Levomilnacipran (Fetzima) label · effective 2024-04-30

Major

Serotonin Syndrome: Increased risk when co-administered with other serotonergic agents, but also when taken alone.

Warnings and precautionsby drug classView label on DailyMed
Major

If concomitant use of FETZIMA with other serotonergic drugs is clinically warranted, inform patients of the increased risk for serotonin syndrome and monitor for symptoms.

Warnings and precautionsby drug classView label on DailyMed
Major

Examples: selegiline, tranylcypromine, isocarboxazid, phenelzine, linezolid, methylene blue Other Serotonergic Drugs Clinical Impact: Concomitant use of FETZIMA with other serotonergic drugs increases the risk of serotonin syndrome.

Drug interactionsby drug classView label on DailyMed
Major

Intervention: Monitor for symptoms of serotonin syndrome when FETZIMA is used concomitantly with other drugs that may affect the serotonergic neurotransmitter systems.

Drug interactionsby drug classView label on DailyMed
Major

If serotonin syndrome occurs, immediately discontinue FETZIMA and/or concomitant serotonergic drugs [ see Dosage and Administration ( 2.5 , 2.6 ) , Contraindications ( 4 ) , and Warnings and Precautions ( 5.2 ) ] .

Drug interactionsby drug classView label on DailyMed

From the Desipramine (Norpramin) label · effective 2025-07-03

Major

Anyone considering the use of NORPRAMIN or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need.

Boxed warningby drug classView label on DailyMed
Major

Concomitant use of Monoamine Oxidase Inhibitors (MAOIs) and serotonergic drugs may potentially cause life threatening adverse events ( see CONTRAINDICATIONS , WARNINGS , and DOSAGE AND ADMINISTRATION ).

Drug interactionsby drug classView label on DailyMed
Minor

…Syndrome: The development of a potentially life-threatening serotonin syndrome has been reported with serotonin norepinephrine re-uptake inhibitors (SNRIs) and SSRIs, including NORPRAMIN, alone but particularly with concomitant use of other serotonergic drugs (including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, tryptophan, buspirone, and St.

Warningsby drug classView label on DailyMed
Minor

If concomitant use of NORPRAMIN with other serotonergic drugs including triptans, tricyclic antidepressants, fentanyl, lithium, tramadol, buspirone, tryptophan, and St.

Warningsby drug classView label on DailyMed
Minor

Treatment with NORPRAMIN and any concomitant serotonergic agents should be discontinued immediately if the above events occur and supportive symptomatic treatment should be initiated.

Warningsby 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.