Erythromycin and Sotalol interaction
Erythromycin and Sotalol: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.
Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.
What the FDA labels say
From the Erythromycin label · effective 2025-09-25
Erythromycin should be avoided in patients with known prolongation of the QT interval, patients with ongoing proarrhythmic conditions such as uncorrected hypokalemia or hypomagnesemia, clinically significant bradycardia, and in patients receiving Class IA (quinidine, procainamide) or Class III (dofetilide, amiodarone, sotalol) antiarrhythmic agents.
From the Sotalol (Sotalol hydrochloride) label · effective 2025-07-31
Additive to other QT-prolonging drugs ( 7.1 , 7.2 )
Antiarrhythmic and other QT Prolonging Drugs Withdraw other Class I or Class III antiarrhythmic agents prior to dosing with sotalol.
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.