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Amiodarone-induced hypothyroidism — GPhC CRA MCQ

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HardEndocrine TherapeuticsAmiodarone-induced hypothyroidismGPhC CRA

A 76-year-old woman taking amiodarone 200 mg daily presents a new prescription for levothyroxine after tiredness and weight gain. Her TSH is 18 mU/L and free T4 is low. What monitoring is required?

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Correct answer: D — Check thyroid function periodically and after dose changes while amiodarone continues

Amiodarone contains iodine and can cause hypo- or hyperthyroidism. Thyroid function should be monitored during treatment and interpreted alongside symptoms. Levothyroxine initiation requires follow-up TSH and dose adjustment, especially in older patients. The pharmacist should support monitoring and confirm the prescriber is aware amiodarone is continuing.

Reference: BNF