An antithyroid medication which is used to limit the thyroid gland's ability to produce thyroid hormone.

An antithyroid medication used for hyperthyroidism that blocks thyroid cells from producing thyroid hormone. Also known as PTU.

An antithyroid medication which prevents thyroid cells from producing thyroid hormone. Used to control hyperthyroidism. More about this.

antithyroid drug

Propylthiouracil (PTU) is a thioamide drug used to treat hyperthyroidism. It is a medicine that is used to decrease the amount of thyroid hormone produced by the thyroid gland. PTU inhibits many steps in the synthesis of thyroid hormones, including the addition of iodide to thyroglobulin by the enzyme thyroperoxidase, a necessary step in the synthesis of thyroxine, and by inhibiting the enzyme 5'-deiodinase which converts T4 to T3.