Drug interactions
Donepezil + Ponesimod
Severity: Major
Donepezil and Ponesimod: 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
Ponesimod lowers heart rate at treatment initiation and can affect atrioventricular conduction, while donepezil also causes bradycardia and has QT-prolonging potential. Together they may cause additive bradycardia, syncope or conduction block.
What this interaction means in plain words
Donepezil and Ponesimod 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.
Donepezil belongs to Central Nervous System; Ponesimod belongs to Central Nervous System.
Why it happens
Additive negative chronotropic effects from S1P receptor modulation and cholinesterase inhibition, plus possible QT prolongation.
What to do
Avoid starting ponesimod in patients taking donepezil unless benefits clearly outweigh risks, and seek cardiology advice beforehand. If combined, obtain a baseline ECG and monitor heart rate during 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?
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Other interactions of Donepezil
- Donepezil + Dronedarone Contraindicated
- Donepezil + Pimozide Contraindicated
- Donepezil + Thioridazine Contraindicated
- Donepezil + Vandetanib Contraindicated
- Amiodarone + Donepezil Major
- Amisulpride + Donepezil Major
Other interactions of Ponesimod
- Fingolimod + Ponesimod Contraindicated
- Ponesimod + Siponimod Contraindicated
- Amiodarone + Ponesimod Major
- Amisulpride + Ponesimod Major
- Anagrelide + Ponesimod Major
- Anti-thymocyte + Ponesimod Major
Frequently asked questions
Can I take Donepezil with Ponesimod?
MediHelp rates the interaction as major. Donepezil and Ponesimod 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. Ponesimod lowers heart rate at treatment initiation and can affect atrioventricular conduction, while donepezil also causes bradycardia and has QT-prolonging potential. Together they may cause additive bradycardia, syncope or conduction block.
How serious is the interaction between Donepezil and Ponesimod?
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 starting ponesimod in patients taking donepezil unless benefits clearly outweigh risks, and seek cardiology advice beforehand. If combined, obtain a baseline ECG and monitor heart rate during initiation.
What other medicines interact with Donepezil?
MediHelp also lists interactions of Donepezil with, for example, Dronedarone, Pimozide, Thioridazine. The full list is on the Donepezil page.
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