The generic name of Eugenol is Levothyroxine Sodium Tablet. Hypothyroidism without taking levothyroxine sodium tablets may induce serious complications such as pericardial effusion, heart failure, coma with mucous edema, and even threaten life. Hypothyroidism is caused by thyroid hormone insufficiency or thyroid hormone resistance. Patients diagnosed with hypothyroidism should take levothyroxine sodium tablets for hormone replacement therapy as prescribed by their doctor to maintain thyroid hormone levels within a reasonable range. If not treated with levothyroxine sodium tablets, it may lead to low thyroid hormone levels, which may induce serious complications such as heart enlargement, pericardial effusion, mucous edema coma, and even life-threatening; for infantile hypothyroidism, if left untreated, it may cause serious damage to the child’s growth, development, and intelligence. It is recommended that patients with hypothyroidism actively cooperate with doctors to avoid serious consequences.