What the FDA labels say about taking them together
Dopamine and phenelzine
Dopamine's FDA label of May 12, 2026 names phenelzine in its drug interactions section; the phenelzine label PlainMeds reads does not name dopamine.
Check it at the source: the dopamine FDA label on DailyMed (effective May 12, 2026, Hospira, Inc.); the phenelzine FDA label on DailyMed (effective June 6, 2025, Parke-Davis Div of Pfizer Inc).
What does the dopamine label say about phenelzine?
Dopamine label, drug interactionsMAO Inhibitors Clinical Impact: Because dopamine is metabolized by monoamine oxidase (MAO), inhibition of this enzyme prolongs and potentiates the effect of dopamine which may result in severe hypertension and cardiac arrhythmia. … three weeks prior to the administration of Dopamine HCl in Dextrose Injection. Examples: isocarboxazid, phenelzine, tranylcypromine, rasagiline, selegiline, linezolid.
Source: FDA drug label (Dopamine Hydrochloride in Dextrose), Hospira, Inc., effective May 12, 2026 (SPL set 08f23f6e-150d-45ea-098e-f2edf64c21a1), via openFDA; the full label on DailyMed
What does the phenelzine label say about dopamine?
Phenelzine's label (effective June 6, 2025) does not name dopamine 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
| Dopamine | 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 | In shortage | 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