#antithyroid
- Antithyroid — Diminishing, blocking, or regulating the excessive secretion of thyroid gland hormones; a medication or active substance (such as thiamazole or propylthiouracil) used in the therapy of hyperthyroidism and Graves' disease. These compounds intervene directly in the synthesis of organified iodine or inhibit the coupling of iodotyrosines, thereby reducing thyroxine and triiodothyronine synthesis to restore a state of euthyroidism.