How does methimazole work in the body?

A. Inhibits the synthesis of thyroid hormones: Methimazole is an antithyroid medication that works by blocking the thyroid gland’s ability to produce thyroxine (T4) and triiodothyronine (T3). By inhibiting hormone synthesis, it helps manage hyperthyroidism, reducing symptoms such as rapid heart rate, weight loss, anxiety, and heat intolerance, and preventing further complications. B. Inhibits development of female sex hormones: Methimazole does not have any effect on estrogen, progesterone, or other female sex hormones. Its pharmacologic action is specific to thyroid hormone synthesis and does not influence reproductive hormone pathways. C. Replaces endogenous thyroid hormones: Thyroid hormone replacement therapy, such as levothyroxine, is designed to supplement or replace deficient thyroid hormones in hypothyroidism. Methimazole does not replace hormones but instead decreases their production in hyperthyroid states. D. Promotes development of female sex hormones: Methimazole does not stimulate or promote the production of any sex hormones. Its mechanism is limited to inhibiting thyroid hormone synthesis, and it has no role in reproductive hormone regulation.