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Miconazole warfarin thrush — GPhC CRA MCQ

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ModerateInfectionsMiconazole warfarin thrushGPhC CRA

A warfarin patient asks to buy miconazole oral gel for oral thrush. 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: E — Markedly increased anticoagulant effect and bleeding risk

This scenario assesses Miconazole warfarin thrush in a UK pharmacy practice context. Miconazole oral gel can significantly increase INR and bleeding risk in warfarin patients. The best answer is Markedly increased anticoagulant effect and bleeding risk because it addresses the principal clinical, legal or safety issue before routine supply. The other options are less appropriate because they either miss the key risk, delay necessary review, or would not meet expected BNF, NICE, MEP, MHRA or GPhC practice standards.

Reference: BNF; MEP