Drug interactions
Dronedarone + Siponimod
Severity: Major
Dronedarone and Siponimod: 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
Siponimod slows heart rate at initiation and can affect AV conduction, which adds to dronedarone bradycardic and QT effects. Dronedarone, as a moderate CYP3A4 inhibitor, may also increase siponimod exposure, especially in CYP2C9 poor metabolizers.
What this interaction means in plain words
Dronedarone and Siponimod 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; Siponimod belongs to Central Nervous System.
Why it happens
Additive effects on heart rate, conduction and QT, plus CYP3A4 inhibition raising siponimod levels.
What to do
Avoid initiating siponimod with dronedarone without cardiology input; if used, monitor heart rate and ECG on initiation.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Dronedarone and Siponimod, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Siponimod
- Cladribine + Siponimod Contraindicated
- Fingolimod + Siponimod Contraindicated
- Fluconazole + Siponimod Contraindicated
- Influenza virus vaccine quadrivalent intranasal + Siponimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Siponimod + Thioridazine Contraindicated
Frequently asked questions
Can I take Dronedarone with Siponimod?
MediHelp rates the interaction as major. Dronedarone and Siponimod 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. Siponimod slows heart rate at initiation and can affect AV conduction, which adds to dronedarone bradycardic and QT effects. Dronedarone, as a moderate CYP3A4 inhibitor, may also increase siponimod exposure, especially in CYP2C9 poor metabolizers.
How serious is the interaction between Dronedarone and Siponimod?
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 initiating siponimod with dronedarone without cardiology input; if used, monitor heart rate and ECG on initiation.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
