Drug interactions
Meclizine + Memantine-donepezil
Severity: Moderate
Meclizine 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
Meclizine is an antihistamine with antimuscarinic activity that can counteract donepezil and add to confusion and sedation in older patients. The clinical effect varies with dose and duration.
What this interaction means in plain words
Meclizine 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.
Meclizine belongs to Respiratory; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism between an anticholinergic antihistamine and a cholinesterase inhibitor.
What to do
Limit meclizine to short courses or choose a non-anticholinergic option for vertigo. Monitor cognition and alertness.
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 Meclizine
Frequently asked questions
Can I take Meclizine with Memantine-donepezil?
MediHelp rates the interaction as moderate. Meclizine 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. Meclizine is an antihistamine with antimuscarinic activity that can counteract donepezil and add to confusion and sedation in older patients. The clinical effect varies with dose and duration.
How serious is the interaction between Meclizine 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: Limit meclizine to short courses or choose a non-anticholinergic option for vertigo. Monitor cognition and alertness.
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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