Digoxin and Verapamil interaction
Digoxin and Verapamil: 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 Digoxin label · effective 2025-04-10
Beta-adrenergic Blockers and Calcium Channel Blockers Additive effects on AV node conduction can result in complete heart block.
From the Verapamil (Verapamil Hydrochloride) label · effective 2025-03-25
Digoxin levels can increase by 50 to 75%; reduce digoxin dose ( 7.5 )
Monitor digoxin level periodically during therapy.
Verapamil may reduce total body clearance and extrarenal clearance of digoxin by 27% and 29%, respectively.
If digoxin toxicity is suspected, suspend or discontinue digoxin therapy.
In previous clinical trials with other verapamil formulations related to the control of ventricular response in patients taking digoxin who had atrial fibrillation or atrial flutter, ventricular rates below 50/min at rest occurred in 15% of patients, and asymptomatic hypotension occurred in 5% of patients.
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.