Warfarin and amiodarone — GPhC CRA MCQ

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ModerateDrug InteractionsWarfarin and amiodaroneGPhC CRA

A patient stabilised on warfarin starts amiodarone for AF and asks whether INR monitoring should change. What monitoring is required?

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Correct answer: C — Check INR more frequently after amiodarone is started

Amiodarone can increase warfarin effect, so INR monitoring and dose adjustment may be needed. This makes check inr more frequently after amiodarone is started 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