Drug interactions
Donepezil + Topiramate
Severity: Minor
Donepezil and Topiramate: minor 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
Topiramate is a weak CYP3A4 inducer at higher doses and might slightly lower donepezil exposure. A clinically meaningful effect is unlikely.
What this interaction means in plain words
Donepezil and Topiramate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Donepezil belongs to Central Nervous System; Topiramate belongs to Central Nervous System.
Why it happens
Weak dose-dependent CYP3A4 induction by topiramate increases donepezil metabolism.
What to do
No dose adjustment is routinely required. Monitor cognitive response if topiramate is used at high doses.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Topiramate
Frequently asked questions
Can I take Donepezil with Topiramate?
MediHelp rates the interaction as minor. Donepezil and Topiramate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Topiramate is a weak CYP3A4 inducer at higher doses and might slightly lower donepezil exposure. A clinically meaningful effect is unlikely.
How serious is the interaction between Donepezil and Topiramate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is routinely required. Monitor cognitive response if topiramate is used at high doses.
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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