Drug interactions
Dolasetron + Memantine-donepezil
Severity: Major
Dolasetron and Memantine-donepezil: major 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
Dolasetron causes dose-related QT and PR prolongation, and donepezil may add to the risk of arrhythmia. The combination may lead to torsades de pointes, particularly with electrolyte disturbances.
What this interaction means in plain words
Dolasetron and Memantine-donepezil can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Dolasetron belongs to Gastrointestinal Tract; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Additive QTc prolongation.
What to do
Prefer an antiemetic with less QT liability, such as a different 5-HT3 antagonist or non-QT alternative. If used, check ECG and correct potassium and magnesium.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Dolasetron
- Apomorphine + Dolasetron Contraindicated
- Dofetilide + Dolasetron Contraindicated
- Dolasetron + Ibutilide Contraindicated
- Dolasetron + Pimozide Contraindicated
- Dolasetron + Thioridazine Contraindicated
- Dolasetron + Vandetanib Contraindicated
Frequently asked questions
Can I take Dolasetron with Memantine-donepezil?
MediHelp rates the interaction as major. Dolasetron and Memantine-donepezil can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Dolasetron causes dose-related QT and PR prolongation, and donepezil may add to the risk of arrhythmia. The combination may lead to torsades de pointes, particularly with electrolyte disturbances.
How serious is the interaction between Dolasetron and Memantine-donepezil?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer an antiemetic with less QT liability, such as a different 5-HT3 antagonist or non-QT alternative. If used, check 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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