... , reminders by only pregnancy, fetal death, uterine induction of labor, etc. Description: Mifepristone is a synthetic steroid ... progesterone receptor antagonist used as an abortifacient in the first months of pregnancy, and in smaller doses as an emergency contraceptive ... a powerful glucocorticoid receptor antagonist, Mifepristone was the first antiprogestin to be developed and it has been evaluated ...