Drug interactions
Dronedarone + Vorinostat
Severity: Major
Dronedarone and Vorinostat: major 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
Vorinostat has been associated with QT prolongation, and dronedarone has the same effect. The combination may raise the risk of ventricular arrhythmia.
What this interaction means in plain words
Dronedarone and Vorinostat can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dronedarone belongs to Cardiovascular; Vorinostat belongs to Oncology.
Why it happens
Additive QT interval prolongation.
What to do
Avoid if possible; if both are needed, obtain baseline and serial ECGs and correct potassium and magnesium.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Vorinostat
- Thioridazine + Vorinostat Contraindicated
- Amiodarone + Vorinostat Major
- Amisulpride + Vorinostat Major
- Anagrelide + Vorinostat Major
- Asenapine + Vorinostat Major
- Chlorpromazine + Vorinostat Major
Frequently asked questions
Can I take Dronedarone with Vorinostat?
MediHelp rates the interaction as major. Dronedarone and Vorinostat can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Vorinostat has been associated with QT prolongation, and dronedarone has the same effect. The combination may raise the risk of ventricular arrhythmia.
How serious is the interaction between Dronedarone and Vorinostat?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if possible; if both are needed, obtain baseline and serial ECGs and correct potassium and magnesium.
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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