What the FDA labels say about taking them together
Dronedarone and verapamil
Dronedarone's FDA label of May 29, 2025 names verapamil in its drug interactions section; the verapamil labels PlainMeds reads (4) do not name dronedarone. The dronedarone label: “Calcium Channel Blockers Verapamil and diltiazem are moderate CYP3A inhibitors and increase dronedarone exposure.”
Check it at the source: the dronedarone FDA label on DailyMed (effective May 29, 2025, Sanofi-Aventis U.S. LLC); the verapamil FDA label on DailyMed (effective April 6, 2026, Zydus Pharmaceuticals (USA) Inc.).
What does the dronedarone label say about verapamil?
Dronedarone label, drug interactionsCalcium Channel Blockers Verapamil and diltiazem are moderate CYP3A inhibitors and increase dronedarone exposure.
Source: FDA drug label (Multaq), Sanofi-Aventis U.S. LLC, effective May 29, 2025 (SPL set 7fa41601-7fb5-4155-8e50-2ae903f0d2d6), via openFDA; the full label on DailyMed
What does the verapamil label say about dronedarone?
Verapamil's label (effective April 6, 2026) and its 3 other brand-application labels do not name dronedarone in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Verapamil hydrochloride), Zydus Pharmaceuticals (USA) Inc., effective April 6, 2026 (SPL set e19ab8d8-dae5-489d-9805-7e7407bea06d), 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
| Dronedarone | Verapamil | |
|---|---|---|
| Labeled for | n/a | High blood pressure, Atrial fibrillation, Angina |
| Boxed warning | Yes | No |
| Pharmacy cost (NADAC) | $13.19 per tablet 400 mg tablet | $0.191 per tablet 180 mg tablet |
| Shortage now | No current entry | A presentation being discontinued |
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