Antiemetic in Parkinson's disease — GPhC CRA MCQ
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Correct answer: B — Ask the prescriber to choose an antiemetic suitable for Parkinson's disease
Metoclopramide is a dopamine antagonist and can worsen Parkinsonism or antagonise dopaminergic therapy. Prochlorperazine has similar dopamine-blocking concerns. Antiemetic choice in Parkinson's disease requires care and prescriber review, often with specialist input depending on setting. The pharmacist should query the prescription before supply.
Reference: BNF; NICE CKS Parkinson's disease