Drug interactions
Donepezil + Pilocarpine
Severity: Moderate
Donepezil and Pilocarpine: moderate 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
Donepezil slows acetylcholine breakdown while pilocarpine directly stimulates muscarinic receptors. Combined use can add to cholinergic effects such as sweating, salivation, bradycardia, nausea and diarrhea.
What this interaction means in plain words
Donepezil and Pilocarpine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Donepezil belongs to Central Nervous System; Pilocarpine belongs to Miscellaneous.
Why it happens
Additive cholinergic stimulation via cholinesterase inhibition and direct muscarinic agonism.
What to do
Monitor for cholinergic adverse effects, heart rate and gastrointestinal symptoms. Reduce the pilocarpine dose if effects are troublesome.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Donepezil and Pilocarpine, 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 Donepezil
- Donepezil + Dronedarone Contraindicated
- Donepezil + Pimozide Contraindicated
- Donepezil + Thioridazine Contraindicated
- Donepezil + Vandetanib Contraindicated
- Amiodarone + Donepezil Major
- Amisulpride + Donepezil Major
Other interactions of Pilocarpine
- Amitriptyline + Pilocarpine Moderate
- Atenolol-chlorthalidone + Pilocarpine Moderate
- Atenolol + Pilocarpine Moderate
- Atropine + Pilocarpine Moderate
- Betaxolol + Pilocarpine Moderate
- Bethanechol + Pilocarpine Moderate
Frequently asked questions
Can I take Donepezil with Pilocarpine?
MediHelp rates the interaction as moderate. Donepezil and Pilocarpine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Donepezil slows acetylcholine breakdown while pilocarpine directly stimulates muscarinic receptors. Combined use can add to cholinergic effects such as sweating, salivation, bradycardia, nausea and diarrhea.
How serious is the interaction between Donepezil and Pilocarpine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for cholinergic adverse effects, heart rate and gastrointestinal symptoms. Reduce the pilocarpine dose if effects are troublesome.
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.
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.
