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126404 Medicine

A 38-year-old woman presents to the clinic with new symptoms of palpitations, weight loss, and heat intolerance. On physical examination, she has a mild tremor of her outstretched hands, an enlarged thyroid, and resting tachycardia (heart rate 110/min). Biochemical tests confirm the diagnosis and she is started on methimazole. Which of the following is the most likely mechanism of this drug?

Ainhibition of iodine uptake
Binhibition of thyroidal organic binding and coupling reactions
Clowering serum calcium
Dadrenal suppression
Medicine
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