Gliclazide missed meal — GPhC CRA MCQ

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HardEndocrine TherapeuticsGliclazide missed mealGPhC CRA

Insulin glargine 100 units/mL is prescribed at 38 units once daily for 28 days. Each pre-filled pen contains 3 mL. Ignoring priming and wastage, how many whole pens are required?

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Correct answer: E — 4 pens

The course needs 38 × 28 = 1,064 units. Each pen contains 3 × 100 = 300 units; 1,064 ÷ 300 = 3.55, which must be rounded up to four whole pens, Option E. Option B treats one pen as a monthly pack. Option D supplies only 600 units. Option A supplies 900 units. Option C rounds 3.55 up by two pens.

Reference: Semglee SmPC: https://www.medicines.org.uk/emc/product/100785/smpc; GPhC framework: https://assets.pharmacyregulation.org/files/2025-09/Common-Registration-Assessment-framework-for-sittings-in-2026.pdf