Hypothyroidism that is, hypothyroidism, hypothyroidism should be lifelong medication, need to be analyzed on a case-by-case basis, most of the hypothyroidism need to be lifelong medication, the general drug refers to levothyroxine sodium tablets; part of the hypothyroidism, such as pharmacological hypothyroidism, the recovery of thyroid function can be discontinued after the medication is not required to take lifelong medication. Because the thyroid gland does not have the ability to regenerate, by Hashimoto’s thyroiditis, thyroid surgery, radioactive iodine treatment led to hypothyroidism, generally need to levothyroxine sodium tablets lifelong replacement therapy. If the treatment of hyperthyroidism drugs such as methimazole, propylthiouracil application of overdose, resulting in medication hypothyroidism, generally can be discontinued or reduce the dose of the application of treatment, at this time do not need life-long levothyroxine sodium tablets replacement therapy. It is recommended that patients with hypothyroidism go to the hospital in a timely manner and follow the doctor’s instructions for treatment.