Drug interactions
Donepezil + Pralidoxime
Severity: Minor
Donepezil and Pralidoxime: 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
Pralidoxime reactivates acetylcholinesterase inhibited by organophosphates, so it could theoretically blunt the effect of a cholinesterase inhibitor. The clinical importance is unclear and mostly relevant in poisoning settings.
What this interaction means in plain words
Donepezil and Pralidoxime have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Theoretical reactivation of inhibited cholinesterase, opposing donepezil, which is a reversible inhibitor.
What to do
Treat organophosphate poisoning as indicated and consider withholding donepezil during acute treatment. Monitor the clinical response.
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
Frequently asked questions
Can I take Donepezil with Pralidoxime?
MediHelp rates the interaction as minor. Donepezil and Pralidoxime have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Pralidoxime reactivates acetylcholinesterase inhibited by organophosphates, so it could theoretically blunt the effect of a cholinesterase inhibitor. The clinical importance is unclear and mostly relevant in poisoning settings.
How serious is the interaction between Donepezil and Pralidoxime?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Treat organophosphate poisoning as indicated and consider withholding donepezil during acute treatment. Monitor the clinical response.
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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