Paper II
2016 February (2010 Scheme) · 40 marks · 120 min

Question

Aprepitant

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Answer

Aprepitant is a neurokinin-1 (NK1) receptor antagonist. It blocks the binding of substance P to NK1 receptors in the central nervous system (area postrema/chemoreceptor trigger zone), making it effective in preventing both the acute and, particularly, the delayed phase of chemotherapy-induced nausea and vomiting (especially with highly emetogenic chemotherapy like cisplatin), typically used in combination with a 5-HT3 antagonist and dexamethasone.

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