Drug interactions
Donepezil + Rivastigmine
Severity: Major
Donepezil and Rivastigmine: major 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
Both are cholinesterase inhibitors used for dementia, so combining them adds cholinergic toxicity without a proven benefit. Patients may develop nausea, vomiting, diarrhea, bradycardia and syncope.
What this interaction means in plain words
Donepezil and Rivastigmine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Donepezil belongs to Central Nervous System; Rivastigmine belongs to Central Nervous System.
Why it happens
Duplicate acetylcholinesterase inhibition leading to additive cholinergic effects.
What to do
Avoid concurrent use and use one cholinesterase inhibitor at a time. When switching, stop one agent and start the other at the recommended initial dose.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Rivastigmine
Frequently asked questions
Can I take Donepezil with Rivastigmine?
MediHelp rates the interaction as major. Donepezil and Rivastigmine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both are cholinesterase inhibitors used for dementia, so combining them adds cholinergic toxicity without a proven benefit. Patients may develop nausea, vomiting, diarrhea, bradycardia and syncope.
How serious is the interaction between Donepezil and Rivastigmine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use and use one cholinesterase inhibitor at a time. When switching, stop one agent and start the other at the recommended initial dose.
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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