Paper I
2024 June (Supplementary) (2019 Scheme) · 100 marks · 180 min

Question

Promethazine / Levocetirizine for a machine operator. Name the following (Two examples for each): (8x1=8)

Q140.2 marksShort Answers

Answer

Levocetirizine is the appropriate choice — a second-generation antihistamine with poor blood-brain-barrier penetration, giving minimal sedation, safe for a patient operating machinery. Promethazine, a first-generation antihistamine, crosses the blood-brain barrier and causes significant sedation and impaired psychomotor performance, making it unsafe for a machine operator despite being equally effective against the allergic symptoms themselves.

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