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Digoxin verapamil — GPhC CRA MCQ

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ModerateDrug InteractionsDigoxin verapamilGPhC CRA

A patient taking digoxin is newly prescribed verapamil and reports poor appetite. 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: A — Verapamil can increase digoxin concentration and toxicity risk

Verapamil can increase digoxin exposure and also slows cardiac conduction. In this scenario, the pharmacist should prioritise safe supply, appropriate counselling and timely referral or clarification where needed. This is the single best answer because the other options would either delay assessment, ignore a clinically significant risk, or create an unsafe legal or professional outcome.

Reference: BNF