Cardiac glycosidePrescription only
Digoxin
Tablet
Quick Summary
Digoxin strengthens the heartbeat and slows conduction.
Atrial fibrillation
Heart failure
Medical Uses
Atrial fibrillation: Rate control.
Heart failure: Symptom relief.
How it's taken
Take once a day as prescribed; blood levels may be checked.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Nausea
Loss of appetite.
Vision changes
Yellow-green vision can mean too much.
Irregular heartbeat
Can mean toxicity.
Interactions
Many heart medicines
Amiodarone and verapamil raise levels.
Water tablets
Low potassium increases toxicity.
Critical Warnings
Toxicity
Black Box Warning: Nausea, confusion or vision changes need urgent checking.
Kidney problems
Dose adjustment needed.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Digoxin: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine
- Digoxin: a medicine to treat heart problems(opens in a new tab) · NHS