Drug interactions
Digoxin + Torsemide
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
Loop diuretic–induced hypokalemia and/or hypomagnesemia increases susceptibility to digoxin toxicity and ventricular arrhythmias.
Mechanism of action
Pharmacodynamic: electrolyte depletion enhances digoxin’s arrhythmogenic and toxic effects; pharmacokinetics generally unchanged.
Clinical management
Monitor and maintain K+ and Mg2+ (e.g., K+ >4 mEq/L, Mg2+ >2 mg/dL); consider supplementation or adding a K-sparing agent; check digoxin serum concentration after diuretic changes; monitor ECG and toxicity symptoms.
Drug reference
References
- Lexicomp Drug Interactions: Digoxin + Loop Diuretics — Lexicomp
- Digoxin: Drug information — UpToDate
Frequently asked questions
Can I take Digoxin with Torsemide?
The interaction is rated: Major. Loop diuretic–induced hypokalemia and/or hypomagnesemia increases susceptibility to digoxin toxicity and ventricular arrhythmias.
How serious is the interaction between Digoxin and Torsemide?
The interaction is rated: Major. Evidence level: High.
How is the interaction between Digoxin and Torsemide managed?
Monitor and maintain K+ and Mg2+ (e.g., K+ >4 mEq/L, Mg2+ >2 mg/dL); consider supplementation or adding a K-sparing agent; check digoxin serum concentration after diuretic changes; monitor ECG and toxicity symptoms.
Why do Digoxin and Torsemide interact?
Pharmacodynamic: electrolyte depletion enhances digoxin’s arrhythmogenic and toxic effects; pharmacokinetics generally unchanged.
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