The generic name of Eugenol is Levothyroxine Sodium Tablets, 2 tablets a day is generally a normal dose, always under the guidance of a doctor. Levothyroxine Sodium Tablets are generally available in 50μg or 100μg. The daily dose for individual patients should be determined according to the results of the clinical examination. Generally, thyroid hormone therapy should start with a low dose, and gradually increase the dose every 2~4 weeks until a complete replacement dose is reached. In the suppressive treatment of thyroid cancer, the recommended daily dose is 150~300μg. Common clinical adverse reactions include arrhythmia, palpitations, angina, headache, muscle weakness and cramps, flushing, vomiting, menstrual disorders, tremor, restlessness, insomnia, excessive sweating, weight loss and diarrhea. In case of adverse reactions, the patient’s daily dose should be reduced or the drug should be discontinued for a few days. Clinical attention should be paid to the fact that it is contraindicated in cases of hypersensitivity to the product and its excipients, untreated hypoadrenalism, pituitary insufficiency and thyrotoxicosis, acute myocardial infarction, acute myocarditis and acute holoprosencephaly, and during pregnancy. The specific dosage of levothyroxine sodium tablets should be consulted with a physician, do not self-medication.