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Doxycycline counselling — GPhC CRA MCQ

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EasyInfectionsDoxycycline counsellingGPhC CRA

A patient is prescribed doxycycline 100 mg daily for acne. They are going on holiday and ask about key counselling points. What is the most important interaction to flag?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: C — Use sun protection and take with plenty of water while upright

Doxycycline can cause photosensitivity, so sun protection is important. It can also cause oesophageal irritation, so it should be taken with plenty of water while upright. Antacids and minerals can reduce absorption. Treatment duration for acne is planned over weeks to months and should not be stopped after two days.

Reference: BNF