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Digoxin toxicity interaction — GPhC CRA MCQ

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EasyCardiovascular TherapeuticsDigoxin toxicity interactionGPhC CRA

An 82-year-old woman taking digoxin is prescribed clarithromycin and reports nausea with blurred vision at the counter. What is the most important interaction to flag?

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Correct answer: E — Raised digoxin exposure with toxicity risk

Clarithromycin can increase digoxin exposure, and the symptoms are compatible with digoxin toxicity. This makes raised digoxin exposure with toxicity risk the single best answer in this scenario. The other options would either miss the key safety issue, delay appropriate review, or fail to meet the relevant clinical or professional requirement.

Reference: BNF interactions