What the FDA labels say about taking them together
Ozanimod and phenelzine
Ozanimod's FDA label of April 16, 2026 names phenelzine in its drug interactions section; the phenelzine label PlainMeds reads does not name ozanimod.
Check it at the source: the ozanimod FDA label on DailyMed (effective April 16, 2026, Celgene Corporation); the phenelzine FDA label on DailyMed (effective June 6, 2025, Parke-Davis Div of Pfizer Inc).
What does the ozanimod label say about phenelzine?
Ozanimod label, drug interactionsClinical Impact: The effect of MAO inhibition on ozanimod and/or its metabolites has not been studied clinically. Potential effects on efficacy or safety with co-administration of MAO inhibitors because of altered exposures of ozanimod and/or its metabolites cannot be ruled out. Prevention or Management: Co-administration of ZEPOSIA with MAO inhibitors (e.g., selegiline, phenelzine, linezolid) is contraindicated. At least 14 days should elapse between discontinuation of ZEPOSIA and initiation of treatment with MAO inhibitors.
Source: FDA drug label (ZEPOSIA 7-Day Starter Pack), NDA209899 (Bristol), as published by Celgene Corporation, effective April 16, 2026 (SPL set 93ce2fab-edfb-4804-8074-963071de51e4), via openFDA; the full label on DailyMed
What does the phenelzine label say about ozanimod?
Phenelzine's label (effective June 6, 2025) does not name ozanimod in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Nardil), Parke-Davis Div of Pfizer Inc, effective June 6, 2025 (SPL set 513a41d0-37d4-4355-8a6d-a2c643bce6fa), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Ozanimod | Phenelzine | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | n/a | $0.586 per tablet 15 mg tablet |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once