ATryn (recombinant antithrombin)

ATryn is a medicine that contains recombinant antithrombin, a protein used to help prevent blood clots. It is made using genetically engineered animals, typically goats, to produce this protein in their milk. Antithrombin naturally occurs in our bodies and helps regulate blood clotting. People with deficiencies in antithrombin are at higher risk for dangerous clots, especially during surgery or illness. ATryn provides a reliable, consistent source of this protein to help manage and reduce that risk. It is particularly important for patients with hereditary antithrombin deficiency or other clotting disorders.