The dosage of propylthiouracil for pregnant women should be judged according to the degree of the pregnant woman’s condition, pregnant women need to be careful with the medication, consult your doctor before using the medication, take it under the guidance of the doctor, do not blindly use the medication on your own. Propylthiouracil is an antithyroid drug that treats various types of hyperthyroidism, and with hyperthyroidism during pregnancy, propylthiouracil is used under the guidance of a doctor, and this type of drug has a relatively small effect on the fetus. The dosage for the treatment of adult hyperthyroidism is usually 100-150mg/times three times a day, and the dosage is gradually reduced after the condition is under control, with the maintenance dosage of 50-150mg per day.Pregnant women need to be careful when using the drug, and it is advisable to consult a doctor before using the drug. Propylthiouracil may cause headache, dizziness, arthralgia, salivary glands and lymph nodes swelling, skin rash, drug fever and other allergic reactions, the more serious adverse reactions are granulocyte deficiency, regular blood tests during the use of the drug, the white blood cell count is less than 4 × 10⁹ / L or neutrophils are less than 1.5 × 10⁹ / L, according to the doctor’s instructions to stop or adjust the drug. or adjust the medication. Pregnant women are recommended to use propylthiouracil under the supervision of a doctor to improve the safety of the drug.