Drug interactions
Memantine-donepezil + Rapacuronium
Severity: Moderate
Memantine-donepezil and Rapacuronium: 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
Cholinesterase inhibitors like donepezil can reduce the effect of nondepolarizing neuromuscular blockers by increasing acetylcholine at the neuromuscular junction. This may cause resistance to blockade during anesthesia.
What this interaction means in plain words
Memantine-donepezil and Rapacuronium 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.
Why it happens
Increased acetylcholine at the neuromuscular junction competitively opposes nondepolarizing blockade.
What to do
Tell the anesthesia team about donepezil use and monitor neuromuscular function with a nerve stimulator, adjusting the blocker dose as needed.
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
Frequently asked questions
Can I take Memantine-donepezil with Rapacuronium?
MediHelp rates the interaction as moderate. Memantine-donepezil and Rapacuronium 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. Cholinesterase inhibitors like donepezil can reduce the effect of nondepolarizing neuromuscular blockers by increasing acetylcholine at the neuromuscular junction. This may cause resistance to blockade during anesthesia.
How serious is the interaction between Memantine-donepezil and Rapacuronium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Tell the anesthesia team about donepezil use and monitor neuromuscular function with a nerve stimulator, adjusting the blocker dose as needed.
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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