Methylthiouracil


![Methylthiouracil synthesis:[1]](/uploads/202501/27/Methylthiouracil_synthesis.svg2926.png)
Methylthiouracil is an antithyroid preparation. It is a thioamide, closely related to propylthiouracil.
Methylthiouracil is not used clinically in the United States, it has a similar mechanism of action and side effect to that of propylthiouricil.
The drug acts to decrease the formation of stored thyroid hormone, as thyroglobulin in the thyroid gland.