Thyroid Pharmacology Quiz

Which of the following drugs inhibits the iodination of tyrosine in the thyroid gland?

• Radioactive iodine

• Potassium iodide

• Propylthiouracil

• Propranolol

Which of the following is a prodrug that converts to methimazole in the body?

• Carbimazole

• Propylthiouracil

• Methylthiouracil

• Radioactive iodine

Which anti-thyroid drug also inhibits peripheral conversion of T4 to T3?

• Methimazole

• Radioactive iodine

• Propylthiouracil

• Lugol's solution

Which of the following drugs destroys thyroid tissue through emission of beta radiation?

• Potassium iodide

• Carbimazole

• Propylthiouracil

• Radioactive iodine (I¹³¹)

Which of the following is an adverse effect of thioamides?

• Hypercalcemia

• Agranulocytosis

• Bradycardia

• Myopathy

What is the primary therapeutic use of thioamides like methimazole?

• Hypothyroidism

• Graves' disease

• Thyroid carcinoma

• Myxedema

Which class of drugs is contraindicated in pregnancy due to risk of fetal thyroid suppression?

• Beta-blockers

• Thioamides

• Iodine salts

• Radioactive iodine

Which of the following has an uncertain mode of action in reducing thyroid gland size?

• Propylthiouracil

• Methimazole

• Potassium iodide

• I¹³¹

Which of the following drugs is used to reduce vascularity before thyroid surgery?

• Methimazole

• Propranolol

• Lugol's solution

• Carbimazole

What is a serious adverse effect of radioactive iodine therapy?

• Diarrhea

• Liver cirrhosis

• Thyroid carcinoma

• Goiter