Euthyrox is the trade name and generic name of Levothyroxine Sodium Tablet, which needs to be applied after you can start eating after early surgery for thyroid cancer. Because thyroid cancer surgery requires total or major removal of the thyroid gland, resulting in insufficient or no secretion of thyroxine, levothyroxine sodium tablets have to be taken as a substitute treatment to maintain the body’s thyroid function. In the early postoperative period of early thyroid cancer, there is still a certain amount of thyroxine in the body, which will be gradually consumed. Levothyroxine sodium tablets can be applied after you can start eating after surgery. The normal level of thyroid hormones in the body will be maintained by regular application of levothyroxine sodium tablets and will be reviewed after one month. Levothyroxine sodium tablets need to be taken for a lifetime after the early stage of thyroid cancer surgery, and regular monitoring of thyroid function changes, once abnormal thyroid function occurs, the dosage of the drug needs to be adjusted in a timely manner.