Eugenol is the trade name for levothyroxine tablets, which can usually be broken up and is recommended to be taken under the supervision of a doctor. Levothyroxine tablets are dosed at 50ug per tablet, but some people take a smaller dose of 25ug, which can be broken into half tablets. Some people take a larger dose and need to take one and a half tablets, which need to be broken up. Levothyroxine tablets that have been broken open should be stored in an airtight vial, as moisture can affect their effectiveness. An overdose of levothyroxine tablets can cause symptoms of hyperthyroidism, excessive sweating, weight loss, and tachycardia. Insufficient dosage, hypothyroidism symptoms cannot be improved and weight gain, facial swelling, and decreased blood pressure may occur. It is contraindicated in patients with tachyarrhythmia or recent myocardial infarction, and it is contraindicated in those who are allergic to the product. During the period of taking Levothyroxine Tablets for hypothyroidism, the thyroid function should be rechecked regularly, and the drug dosage should be adjusted according to the doctor’s prescription based on the thyroid function.