Patients who have an overactive thyroid might take propylthiouracil to regulate their thyroid function. This medication blocks the thyroid gland from producing thyroid in order to prevent hyperthyroidism. It is taken orally three times a day.
This medication causes severe liver damage in both adults and children. Some patients may require a liver transplant or die of liver failure as a result of taking this medication. For this reason, this medication should be reserved for use in cases where other medications or treatments cannot be given or don’t work. Patients should also contact their doctors immediately if they have signs of liver disease such as jaundice, brown urine, fatigue, loss of appetite, stomach pain and nausea and vomiting.