Drug interactions
Gemtuzumab + Memantine-donepezil
Severity: Moderate
Gemtuzumab 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
Donepezil and gemtuzumab ozogamicin have each been linked to QT prolongation. Together they may increase the likelihood of arrhythmia, particularly in oncology patients who often have electrolyte disturbances or other QT-prolonging drugs.
What this interaction means in plain words
Gemtuzumab 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.
Why it happens
Additive QT prolongation; gemtuzumab's effect is thought to be related to its calicheamicin payload.
What to do
Check ECG and electrolytes before and during treatment. Correct potassium and magnesium and review other QT-prolonging drugs.
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 Gemtuzumab with Memantine-donepezil?
MediHelp rates the interaction as moderate. Gemtuzumab 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. Donepezil and gemtuzumab ozogamicin have each been linked to QT prolongation. Together they may increase the likelihood of arrhythmia, particularly in oncology patients who often have electrolyte disturbances or other QT-prolonging drugs.
How serious is the interaction between Gemtuzumab 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: Check ECG and electrolytes before and during treatment. Correct potassium and magnesium and review other QT-prolonging drugs.
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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