The generic name of Eugenol is Levothyroxine Sodium Tablet, which usually starts to see the effect in 3~5 days of taking the medicine, and the obvious effect can usually be seen after 4-6 weeks of taking the medicine. Levothyroxine sodium tablets are thyroid hormone drugs that can be used for non-toxic goiter, postoperative suppression therapy for thyroid cancer, treatment of hypothyroidism and other diseases as well as adjuvant therapy for hyperthyroidism treated with antithyroid medications; it is not recommended for patients who are allergic to levothyroxine sodium tablets, heart failure, recent heart attack, tachyarrhythmia, and so on. Routine administration of levothyroxine sodium tablets usually takes 3 to 5 days to begin to see the effect, it takes a few weeks to reach peak efficacy; long-term overdose may cause symptoms of hyperthyroidism, such as palpitations, hand tremors, weight loss, excessive sweating, insomnia, diarrhea and other adverse reactions. Patients who need to take levothyroxine sodium tablets for treatment should use the medication under the guidance of a doctor, and regularly review the thyroid function.