Overdose in hyperthyroid patients may cause side effects such as bradycardia, fatigue, constipation and weight gain. Hyperthyroidism patients usually need to take antithyroid drugs, such as methimazole, propoxypyrine, etc., to control the thyroid hormone within a reasonable range; if the dosage of the drug is too high, it may induce hypothyroidism, which may cause symptoms such as fatigue, weight gain, bradycardia, abdominal distension, constipation, chills, impaired concentration, memory loss, etc. Once these symptoms occur, it is recommended to reduce or stop the drug under the guidance of a doctor. Once these symptoms occur, it is recommended to reduce or stop the medication under the guidance of a doctor, and the symptoms of hypothyroidism can be relieved when the level of thyroid hormone increases. Patients who need to take antithyroid medication should use it under the guidance of a doctor, and if the above symptoms occur after taking the medication, it is recommended to go to the hospital for consultation.