Hyperthyroidism is the short form of hyperthyroidism, patients with hyperthyroidism can eat propylthiouracil, methimazole and other antithyroid drugs under the guidance of a doctor, all have a certain effect. The mechanism of action of antithyroid drugs is to inhibit the organicization of iodine and thyroid tyrosine coupling, reducing the synthesis of thyroid hormones. However, they do not inhibit the hormones already synthesized in the thyroid gland. Note that antithyroid drugs may cause adverse reactions such as granulocyte deficiency, skin rash, toxic liver disease, vasculitis, and fetal skin dysplasia. Patients diagnosed with hyperthyroidism should actively cooperate with the doctor’s treatment and use medication under the doctor’s supervision.