An antifibrinolytic agent that acts by inhibiting plasminogen activators which have fibrinolytic properties.

A synthetic progestin that is derived from 17-hydroxyprogesterone. It is a long-acting contraceptive that is effective both orally or by intramuscular injection and has also been used to treat breast and endometrial neoplasms.

The octapeptide amide of bovine angiotensin II used to increase blood pressure by vasoconstriction.

A keto derivative of proline. Elevated levels of pyrrolidonecarboxylic acid are often associated with problems of glutamine or glutathione metabolism. (From Stedman, 26th ed)