Half a capsule of propylthiouracil a day side effects are generally not significant, patients take the dose of the drug, you need to strictly follow the doctor’s instructions, do not unauthorized use of the drug. Propylthiouracil is an antithyroid drug that can be used to treat various types of hyperthyroidism. If patients take half a capsule a day as prescribed by their doctor, the side effects are generally not significant. Most patients may experience side effects such as headache, dizziness, joint pain, abdominal pain, diarrhea, fever, etc. while taking propylthiouracil, but not all patients may experience them, and they should be judged on their own merits. This drug is contraindicated in patients who are allergic to the ingredients of propylthiouracil, severe liver impairment, and severe deficiency of white blood cells. Pregnant and lactating women should be cautious about taking this drug. During the period of taking propylthiouracil, patients should also follow the doctor’s instructions to regularly review the thyroid function five, thyroid ultrasound, etc., in order to understand the effect of treatment. During the treatment period, if there are any abnormalities in the body, you should consult a doctor in time.