What the FDA labels say about taking them together
Dexamethasone and ephedrine
Dexamethasone's FDA label of June 6, 2025 names ephedrine in its drug interactions section; the ephedrine labels PlainMeds reads (4) do not name dexamethasone. The dexamethasone label: “Ephedrine Ephedrine may decrease dexamethasone exposure.”
Check it at the source: the dexamethasone FDA label on DailyMed (effective June 6, 2025, Hikma Pharmaceuticals USA, Inc.); the ephedrine FDA label on DailyMed (effective September 16, 2024, Nexus Pharmaceuticals, LLC).
What does the dexamethasone label say about ephedrine?
Dexamethasone label, drug interactionsEphedrine may enhance the metabolic clearance of corticosteroids, resulting in decreased blood levels and lessened physiologic activity, thus requiring an increase in corticosteroid dosage.
Hemady label (Edenbridge Pharmaceuticals LLC., January 9, 2026), drug interactionsEphedrine Ephedrine may decrease dexamethasone exposure.
Source: FDA drug label (Hemady, NDA211379), Edenbridge Pharmaceuticals LLC., effective January 9, 2026 (SPL set 6b9cf32c-6d60-4853-bbfd-2304ffc2c129), via openFDA
Source: FDA drug label (Dexamethasone Intensol), Hikma Pharmaceuticals USA, Inc., effective June 6, 2025 (SPL set b15200fb-1826-472b-a907-e677a272513b), via openFDA; the full label on DailyMed
What does the ephedrine label say about dexamethasone?
Ephedrine's label (effective September 16, 2024) and its 3 other brand-application labels do not name dexamethasone in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Emerphed PFS), Nexus Pharmaceuticals, LLC, effective September 16, 2024 (SPL set 14601778-93ac-43ec-b66b-5a942317133f), 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
| Dexamethasone | Ephedrine | |
|---|---|---|
| Labeled for | Asthma, Eczema (atopic dermatitis), Leukemia, lymphoma and myeloma, Herpes and shingles, Crohn's disease and ulcerative colitis, Multiple sclerosis, Osteoarthritis, Rheumatoid arthritis, Psoriasis, Allergies, Anemia, Pain | Asthma |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | $0.193 per tablet 4 mg tablet | n/a |
| 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