Drug interactions
DHEA herbal + Memantine-donepezil
Severity: Minor
DHEA herbal and Memantine-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
The legacy suggestion that DHEA raises donepezil exposure is not well supported, and any CYP3A4 effect of DHEA is poorly characterised. A clinically important interaction has not been established.
What this interaction means in plain words
DHEA herbal and Memantine-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
A possible effect on CYP3A4 has been proposed, but the mechanism is not established.
What to do
No specific action is needed. Monitor for cholinergic adverse effects if DHEA is used long term.
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
Frequently asked questions
Can I take DHEA herbal with Memantine-donepezil?
MediHelp rates the interaction as minor. DHEA herbal and Memantine-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. The legacy suggestion that DHEA raises donepezil exposure is not well supported, and any CYP3A4 effect of DHEA is poorly characterised. A clinically important interaction has not been established.
How serious is the interaction between DHEA herbal and Memantine-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: No specific action is needed. Monitor for cholinergic adverse effects if DHEA is used long term.
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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