Eugenol is levothyroxine sodium tablets, one and a quarter tablets per day and one tablet per day, one and a half tablets every other day, the effect is generally different, need to be combined with the results of the thyroid function to determine the dosage of the drug, it is recommended to follow the doctor’s instructions to take medication regularly, do not increase or decrease the dose of the drug on their own. Levothyroxine sodium tablets belong to the thyroid hormone class of drugs, mainly used as thyroid hormone replacement therapy, the specific dosage varies from person to person, but must strictly abide by the doctor’s prescribed dosage and method of medication, so as not to affect the therapeutic effect. Thyroid function should be checked regularly during the period of taking the drug so that the dose can be adjusted in time. Contraindications to the drug include hypersensitivity to the drug, tachyarrhythmia, non-hypothyroid heart failure, and patients with recent myocardial infarction. Adverse reactions include angina pectoris, arrhythmia, palpitations, tremor, euphoria, headache, restlessness, insomnia, diarrhea, vomiting, excessive sweating, flushing, weight loss, and skeletal muscle cramps. Levothyroxine sodium tablets belong to the prescription drugs, can not adjust the dose or usage, should strictly follow the doctor’s instructions for use.