Drug interactions
Escitalopram + Memantine-donepezil
Severity: Moderate
Escitalopram 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
Escitalopram causes dose-dependent QT prolongation, and donepezil has also been linked to torsades de pointes. Together they may raise arrhythmia risk, especially in older patients or those with electrolyte abnormalities.
What this interaction means in plain words
Escitalopram 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.
Escitalopram belongs to Central Nervous System; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Additive QTc prolongation.
What to do
Keep the escitalopram dose low, with a lower maximum in older patients. Obtain a baseline ECG and correct potassium and magnesium.
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 Escitalopram
- Cisapride + Escitalopram Contraindicated
- Citalopram + Escitalopram Contraindicated
- Escitalopram + Isocarboxazid Contraindicated
- Escitalopram + Methylene blue Contraindicated
- Escitalopram + Phenelzine Contraindicated
- Escitalopram + Pimozide Contraindicated
Frequently asked questions
Can I take Escitalopram with Memantine-donepezil?
MediHelp rates the interaction as moderate. Escitalopram 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. Escitalopram causes dose-dependent QT prolongation, and donepezil has also been linked to torsades de pointes. Together they may raise arrhythmia risk, especially in older patients or those with electrolyte abnormalities.
How serious is the interaction between Escitalopram 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: Keep the escitalopram dose low, with a lower maximum in older patients. Obtain a baseline ECG and correct potassium and magnesium.
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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