Drug interactions
Memantine-donepezil + Rufinamide
Severity: Minor
Memantine-donepezil and Rufinamide: 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
Rufinamide is a weak CYP3A4 inducer and may slightly lower donepezil concentrations. A clinically meaningful loss of effect is unlikely in most patients.
What this interaction means in plain words
Memantine-donepezil and Rufinamide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Memantine-donepezil belongs to Central Nervous System; Rufinamide belongs to Central Nervous System.
Why it happens
Weak induction of CYP3A4 by rufinamide increases donepezil metabolism.
What to do
No dose change is needed; reassess cognitive response if rufinamide is started or stopped.
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 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 Rufinamide
- Carbamazepine + Rufinamide Moderate
- Desogestrel-ethinyl estradiol + Rufinamide Moderate
- Dronedarone + Rufinamide Moderate
- Esketamine + Rufinamide Moderate
- Ethinyl estradiol-drospirenone + Rufinamide Moderate
- Ethinyl estradiol-levonorgestrel + Rufinamide Moderate
Frequently asked questions
Can I take Memantine-donepezil with Rufinamide?
MediHelp rates the interaction as minor. Memantine-donepezil and Rufinamide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Rufinamide is a weak CYP3A4 inducer and may slightly lower donepezil concentrations. A clinically meaningful loss of effect is unlikely in most patients.
How serious is the interaction between Memantine-donepezil and Rufinamide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose change is needed; reassess cognitive response if rufinamide is started or stopped.
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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