What the FDA labels say about taking them together
Dihydroergotamine and propranolol
Dihydroergotamine's FDA label of March 6, 2025 names propranolol in its drug interactions section; the propranolol labels PlainMeds reads (4) do not name dihydroergotamine.
Check it at the source: the dihydroergotamine FDA label on DailyMed (effective March 6, 2025, Oceanside Pharmaceuticals); the propranolol FDA label on DailyMed (effective January 15, 2026, Mylan Pharmaceuticals Inc.).
What does the dihydroergotamine label say about propranolol?
Dihydroergotamine label, drug interactionsBeta-Blockers Although the results of a clinical study did not indicate a safety problem associated with the administration of Dihydroergotamine Mesylate Nasal Spray to subjects already receiving propranolol, there have been reports that propranolol may potentiate the vasoconstrictive action of ergotamine by blocking the vasodilating property of epinephrine.
Trudhesa label (Impel Pharmaceuticals LLC, September 3, 2026), drug interactionsThere have been reports that propranolol may potentiate the vasoconstrictive action of ergotamine by blocking the vasodilating property of epinephrine.
Source: FDA drug label (Trudhesa, NDA213436), Impel Pharmaceuticals LLC, effective September 3, 2026 (SPL set b81397b0-910d-4eb4-8fee-a9a3c9d94d63), via openFDA
Source: FDA drug label (Dihydroergotamine Mesylate), NDA020148 (Bausch), as published by Oceanside Pharmaceuticals, effective March 6, 2025 (SPL set 977de209-c53a-4cb4-9f3f-1e850600a9dc), via openFDA; the full label on DailyMed
What does the propranolol label say about dihydroergotamine?
Propranolol's label (effective January 15, 2026) and its 3 other brand-application labels do not name dihydroergotamine in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Propranolol Hydrochloride), Mylan Pharmaceuticals Inc., effective January 15, 2026 (SPL set b94dcec7-7633-4a33-9cea-48161adeaf93), 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
| Dihydroergotamine | Propranolol | |
|---|---|---|
| Labeled for | Migraine | High blood pressure, Angina, Atrial fibrillation, Migraine |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $29.44 per mL 4 mg/mL nasal spray | $0.0493 per tablet 20 mg tablet |
| Shortage now | No current entry | In shortage |
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