Drug interactions
Atropine + Memantine-donepezil
Severity: Moderate
Atropine and Memantine-donepezil: 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
Atropine blocks muscarinic receptors and opposes the cholinergic effect of donepezil, so each reduces the other's action. It can nevertheless be used deliberately to control donepezil-induced bradycardia or excess secretions.
What this interaction means in plain words
Atropine and Memantine-donepezil 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.
Atropine belongs to Miscellaneous; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Antimuscarinic blockade opposes acetylcholine increased by cholinesterase inhibition.
What to do
Avoid routine concurrent use for cognitive benefit. Where atropine is used for bradycardia or poisoning, titrate to heart rate and symptoms.
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?
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Other interactions of Memantine-donepezil
- Dronedarone + Memantine-donepezil Contraindicated
- Memantine-donepezil + Thioridazine Contraindicated
- Amantadine + Memantine-donepezil Major
- Amiodarone + Memantine-donepezil Major
- Amisulpride + Memantine-donepezil Major
- Amitriptyline + Memantine-donepezil Major
Other interactions of Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Atropine with Memantine-donepezil?
MediHelp rates the interaction as moderate. Atropine and Memantine-donepezil 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. Atropine blocks muscarinic receptors and opposes the cholinergic effect of donepezil, so each reduces the other's action. It can nevertheless be used deliberately to control donepezil-induced bradycardia or excess secretions.
How serious is the interaction between Atropine and Memantine-donepezil?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid routine concurrent use for cognitive benefit. Where atropine is used for bradycardia or poisoning, titrate to heart rate and symptoms.
What other medicines interact with Memantine-donepezil?
MediHelp also lists interactions of Memantine-donepezil with, for example, Dronedarone, Thioridazine, Amantadine. The full list is on the Memantine-donepezil page.
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