Drug interactions
Donepezil transdermal + Prochlorperazine
Severity: Moderate
Donepezil transdermal and Prochlorperazine: 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 increases cholinergic activity while phenothiazines such as prochlorperazine have anticholinergic and dopamine-blocking effects, so they may counteract each other. Antipsychotics can also worsen parkinsonism and may increase the risk of neuroleptic malignant syndrome in patients taking cholinesterase inhibitors.
What this interaction means in plain words
Donepezil transdermal and Prochlorperazine 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
Pharmacodynamic antagonism between cholinesterase inhibition and antimuscarinic or antidopaminergic effects.
What to do
Monitor cognitive response and for extrapyramidal symptoms. Prefer an antiemetic without central dopamine blockade in dementia patients where possible.
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 Prochlorperazine
- Dronedarone + Prochlorperazine Contraindicated
- Ibutilide + Prochlorperazine Contraindicated
- Nilotinib + Prochlorperazine Contraindicated
- Pimozide + Prochlorperazine Contraindicated
- Prochlorperazine + Thioridazine Contraindicated
- Amiodarone + Prochlorperazine Major
Frequently asked questions
Can I take Donepezil transdermal with Prochlorperazine?
MediHelp rates the interaction as moderate. Donepezil transdermal and Prochlorperazine 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 increases cholinergic activity while phenothiazines such as prochlorperazine have anticholinergic and dopamine-blocking effects, so they may counteract each other. Antipsychotics can also worsen parkinsonism and may increase the risk of neuroleptic malignant syndrome in patients taking cholinesterase inhibitors.
How serious is the interaction between Donepezil transdermal and Prochlorperazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor cognitive response and for extrapyramidal symptoms. Prefer an antiemetic without central dopamine blockade in dementia patients where possible.
What other medicines interact with Prochlorperazine?
MediHelp also lists interactions of Prochlorperazine with, for example, Dronedarone, Ibutilide, Nilotinib. The full list is on the Prochlorperazine page.
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