Generically known as Levothyroxine Sodium Tablets, the indications for taking Levothyroxine Sodium Tablets are primarily replacement therapy for hypothyroidism. In addition to the above indications, the drug is also used for the treatment of non-toxic goiter (normal thyroid function); taken after goiter removal to prevent goiter recurrence; adjunctive therapy to antithyroid medications in the treatment of hyperthyroidism; suppressive therapy after thyroid cancer; thyroid suppression tests, etc. Symptoms of hyperthyroidism, such as arrhythmias, tachycardia, palpitations, angina pectoris, headache, fever, vomiting, menstrual disorders and other symptoms, may occur with the use of this product in excess of an individual’s tolerated dose or with overdose, especially due to a rapid increase in dose at the beginning of treatment. Levothyroxine sodium tablets need to be used under the guidance of a doctor, not blindly self-medication.