What is hypothyroidism? Hypothyroidism is the abbreviation for hypothyroidism. Various causes lead to hypothyroidism, where the thyroid gland produces less thyroid hormone, causing a range of disease manifestations. There are many causes of hypothyroidism, most commonly due to Choban’s thyroiditis, after treatment for hyperthyroidism (e.g., iodine 131 therapy, surgery), and removal of the thyroid gland for thyroid tumors. How is hypothyroidism treated? The main and most reliable method of treatment for hypothyroidism is exogenous thyroid hormone replacement therapy, which means taking oral thyroid hormone medication to correct the state of thyroid hormone deficiency caused by the thyroid gland’s insufficient ability to produce thyroid hormone. The most commonly used replacement therapy drugs are levothyroxine sodium, represented by euthyroxine and retinoids. How to adjust the dose of Euthyrox or Raltez? The goal of hypothyroidism treatment is to keep the body’s thyroid hormone level within the normal range by taking Euthyrox or Raltez orally. A low TSH indicates an overdose and should be reduced, while a high TSH indicates an underdose and should be increased. Replacement therapy with Euthyrox or Raltez is mostly stable and does not require frequent blood tests for thyroid function. My experience is that if the dosage is increased or decreased, blood tests should be taken one to one and a half months after the dosage has been changed to determine if the dosage is appropriate, and a six-month review should be done after the correct dosage has been confirmed. How to take thyroid replacement medication correctly? As Eugenol is most commonly used, take Eugenol as an example. The best time to take Eugenol is half an hour before breakfast and one dose a day. It is very difficult and undesirable to divide a pill into two halves at most, and then divide the pill into smaller portions. When seeing a doctor or consulting online, patients are often convinced to take a quarter of a pill, an eighth of a pill, etc. It is very difficult to do so, and it is also difficult to ensure the accuracy of the dose. My experience is that if the daily amount is 75 micrograms, you can use 1 and a half tablets a day, or take 2 tablets on the first day and 1 tablet on the second day, alternating with the same effect; if the daily dose is 125 micrograms, you can take 3 tablets a day, alternating with 2 tablets on the second day, and 2 days is exactly one row of the Eugenol package. How to deal with hypothyroidism patients during pregnancy and nursing period? Hypothyroidism patients must keep taking Eugenol normally during pregnancy and should have monthly blood tests for thyroid function indicators to adjust the dosage in time. Nursing mothers can take it normally and it will not affect their babies.