What the FDA labels say about taking them together
Clarithromycin and sotalol
Clarithromycin's FDA label of April 9, 2026 names sotalol in its drug interactions section; the sotalol labels PlainMeds reads (3) do not name clarithromycin. The clarithromycin label: “Disopyramide Quinidine Dofetilide Amiodarone Sotalol Procainamide Not Recommended Disopyramide, Quinidine:”
Check it at the source: the clarithromycin FDA label on DailyMed (effective April 9, 2026, Solaris Pharma Corporation); the sotalol FDA label on DailyMed (effective December 16, 2024, Legacy Pharma USA, Inc.).
What does the clarithromycin label say about sotalol?
Clarithromycin label, drug interactionsDisopyramide Quinidine Dofetilide Amiodarone Sotalol Procainamide Not Recommended Disopyramide, Quinidine:
Clarithromycin label, warnings and precautionsAvoid clarithromycin in the following patients: patients with known prolongation of the QT interval, ventricular cardiac arrhythmia, including torsades de pointes patients receiving drugs known to prolong the QT interval [see also Contraindications (4.2) ] patients with ongoing proarrhythmic conditions such as uncorrected hypokalemia or hypomagnesemia, clinically significant bradycardia and in patients receiving Class IA (e.g., quinidine, procainamide, disopyramide) or Class III (e.g., dofetilide, amiodarone, sotalol) antiarrhythmic agents.
Source: FDA drug label (Clarithromycin), Solaris Pharma Corporation, effective April 9, 2026 (SPL set 4d42821d-ce7a-7d64-e063-6294a90a0875), via openFDA; the full label on DailyMed
What does the sotalol label say about clarithromycin?
Sotalol's label (effective December 16, 2024) and its 2 other brand-application labels do not name clarithromycin in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (BETAPACE), Legacy Pharma USA, Inc., effective December 16, 2024 (SPL set a6a7702f-36c9-45db-b640-453dc324baee), 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
| Clarithromycin | Sotalol | |
|---|---|---|
| Labeled for | Bacterial infections, Acid reflux and ulcers | Atrial fibrillation |
| Boxed warning | No | Yes |
| Pharmacy cost (NADAC) | $0.466 per tablet 500 mg tablet | $0.0707 per tablet 80 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