Drug interactions
Atropine iv / + Donepezil
Severity: Minor
Atropine iv / and Donepezil: 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
Atropine blocks muscarinic receptors and opposes the cholinergic effects of donepezil, so each drug can reduce the effect of the other. In practice atropine is used to treat donepezil-related bradycardia or excess cholinergic effects.
What this interaction means in plain words
Atropine iv / and Donepezil 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
Pharmacodynamic antagonism between a muscarinic antagonist and a cholinesterase inhibitor.
What to do
Anticipate that atropine may lessen donepezil's cognitive benefit and mask cholinergic effects. Monitor heart rate and clinical response when atropine is given.
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 Atropine iv / with Donepezil?
MediHelp rates the interaction as minor. Atropine iv / and Donepezil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Atropine blocks muscarinic receptors and opposes the cholinergic effects of donepezil, so each drug can reduce the effect of the other. In practice atropine is used to treat donepezil-related bradycardia or excess cholinergic effects.
How serious is the interaction between Atropine iv / and Donepezil?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Anticipate that atropine may lessen donepezil's cognitive benefit and mask cholinergic effects. Monitor heart rate and clinical response when atropine is given.
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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