The generic name of Eugenol is Levothyroxine Sodium Tablets. Side effects of taking Levothyroxine Sodium Tablets are usually caused by using more than the individual’s tolerated dose or overdose, and the side effects can be manifested as cardiac arrhythmia, tachycardia, angina pectoris, headache, fever, vomiting, and menstrual disorders. Contraindications to the use of levothyroxine sodium tablets include hypersensitivity to the product and its excipients; untreated hypoadrenalism, pituitary insufficiency and thyrotoxicosis; acute myocardial infarction, acute myocarditis and acute total carditis; during pregnancy, the product is not used in combination with antithyroid drugs to treat hyperthyroidism. Patients need to strictly follow the doctor’s instructions to take levothyroxine sodium tablets, after the use of the drug if there is any discomfort promptly consult a doctor.