Drug interactions
Dichlorphenamide + Dronedarone
Severity: Moderate
Dichlorphenamide and Dronedarone: 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
Dichlorphenamide promotes renal potassium loss and can cause hypokalemia and metabolic acidosis. Dronedarone prolongs the QT interval, and low potassium raises the risk of torsades de pointes, so the combination increases arrhythmic risk.
What this interaction means in plain words
Dichlorphenamide and Dronedarone 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.
Dichlorphenamide belongs to Miscellaneous; Dronedarone belongs to Cardiovascular.
Why it happens
Additive pharmacodynamic effect: carbonic anhydrase inhibition causes potassium wasting, while hypokalemia potentiates dronedarone-related QT prolongation.
What to do
Check serum potassium and magnesium before starting and periodically during therapy, and correct any deficit promptly. Obtain an ECG if electrolyte disturbances develop or other QT-prolonging drugs are present.
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 Dronedarone
- Adagrasib + Dronedarone Contraindicated
- Amiodarone + Dronedarone Contraindicated
- Arsenic trioxide + Dronedarone Contraindicated
- Artemether / lumefantrine + Dronedarone Contraindicated
- Atazanavir + Dronedarone Contraindicated
- Azithromycin + Dronedarone Contraindicated
Other interactions of Dichlorphenamide
Frequently asked questions
Can I take Dichlorphenamide with Dronedarone?
MediHelp rates the interaction as moderate. Dichlorphenamide and Dronedarone 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. Dichlorphenamide promotes renal potassium loss and can cause hypokalemia and metabolic acidosis. Dronedarone prolongs the QT interval, and low potassium raises the risk of torsades de pointes, so the combination increases arrhythmic risk.
How serious is the interaction between Dichlorphenamide and Dronedarone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check serum potassium and magnesium before starting and periodically during therapy, and correct any deficit promptly. Obtain an ECG if electrolyte disturbances develop or other QT-prolonging drugs are present.
What other medicines interact with Dronedarone?
MediHelp also lists interactions of Dronedarone with, for example, Adagrasib, Amiodarone, Arsenic trioxide. The full list is on the Dronedarone page.
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