Definition of "antithyroid"

A RECENT report by Anderson et al. on the antithyroid activity of a series of alkyl derivatives of thiouracil shows that peak activity is reached at the n-propyl compound.

1946 May 18, E. M. Bavin, D. A. Goodchild, “Antithyroid Activity of Thiouracil Derivatives”, in Nature, 157, 659-660

Postmortem histological examination of the thyroid gland and measurement of serum antithyroid antibodies were performed in 70 patients without overt thyroid disease.

1978, H. Yoshida et al., “Association of serum antithyroid antibodies with lymphocytic infiltration of the thyroid gland: studies of seventy autopsied cases”, in The Journal of Clinical Endocrinology and Metabolism, 46(6):859-862

Antithyroid drugs, which have been in use for more than half a century, remain cornerstones in the management of hyperthyroidism, especially for patients with Graves' disease.

2005 March, D. S. Cooper, “Antithyroid Drugs”, in The New England Journal of Medicine, 352(9):905-917

Drugs known as antithyroid agents—methimazole (Tapazole®) or propylthiouracil (PTU)—may be prescribed if your doctor chooses to treat the hyperthyroidism by blocking the thyroid gland’s ability to make new thyroid hormone.

2005, The American Thyroid Association, "Hyperthyroidism"