Drug interactions
Sotalol + Spironolactone
Severity: Moderate
Sotalol and Spironolactone: moderate interaction.
Last updated
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.
Summary
Beta-blockers can slightly raise serum potassium by reducing cellular uptake, and spironolactone reduces renal potassium loss. Because sotalol prolongs the QT interval and is renally cleared, any electrolyte disturbance or renal decline is clinically important.
What this interaction means in plain words
Sotalol and Spironolactone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Sotalol belongs to Cardiovascular; Spironolactone belongs to Cardiovascular.
Why it happens
Aldosterone antagonism combined with beta-blocker inhibition of beta2-mediated cellular potassium uptake; electrolyte shifts also affect sotalol proarrhythmic risk.
What to do
Monitor serum potassium, magnesium and renal function periodically, and review the ECG QT interval if electrolytes change.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Spironolactone
- Amiloride + Spironolactone Contraindicated
- Eplerenone + Spironolactone Contraindicated
- Spironolactone + Triamterene Contraindicated
- Abiraterone + Spironolactone Major
- Aceclofenac + Spironolactone Major
- Acemetacin + Spironolactone Major
Other interactions of Sotalol
- Arsenic trioxide + Sotalol Contraindicated
- Artemether / lumefantrine + Sotalol Contraindicated
- Disopyramide + Sotalol Contraindicated
- Dofetilide + Sotalol Contraindicated
- Dronedarone + Sotalol Contraindicated
- Droperidol + Sotalol Contraindicated
Frequently asked questions
Can I take Sotalol with Spironolactone?
MediHelp rates the interaction as moderate. Sotalol and Spironolactone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Beta-blockers can slightly raise serum potassium by reducing cellular uptake, and spironolactone reduces renal potassium loss. Because sotalol prolongs the QT interval and is renally cleared, any electrolyte disturbance or renal decline is clinically important.
How serious is the interaction between Sotalol and Spironolactone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium, magnesium and renal function periodically, and review the ECG QT interval if electrolytes change.
What other medicines interact with Spironolactone?
MediHelp also lists interactions of Spironolactone with, for example, Amiloride, Eplerenone, Triamterene. The full list is on the Spironolactone page.
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