Drug interactions
Dronedarone + Rufinamide
Severity: Moderate
Dronedarone and Rufinamide: 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
Rufinamide is a weak CYP3A4 inducer and may modestly lower dronedarone concentrations. This could reduce antiarrhythmic efficacy, though the effect is probably small. Rufinamide also shortens the QT interval, which is a separate pharmacodynamic consideration.
What this interaction means in plain words
Dronedarone and Rufinamide 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.
Dronedarone belongs to Cardiovascular; Rufinamide belongs to Central Nervous System.
Why it happens
Weak induction of CYP3A4 increases dronedarone metabolism.
What to do
Monitor heart rhythm control and clinical response after rufinamide is started or stopped. Consider alternatives if arrhythmia control worsens.
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 Rufinamide
Frequently asked questions
Can I take Dronedarone with Rufinamide?
MediHelp rates the interaction as moderate. Dronedarone and Rufinamide 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. Rufinamide is a weak CYP3A4 inducer and may modestly lower dronedarone concentrations. This could reduce antiarrhythmic efficacy, though the effect is probably small. Rufinamide also shortens the QT interval, which is a separate pharmacodynamic consideration.
How serious is the interaction between Dronedarone and Rufinamide?
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 heart rhythm control and clinical response after rufinamide is started or stopped. Consider alternatives if arrhythmia control worsens.
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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