Effect of Norethindrone Acetate Upon Gonadotrophin-Induced Ovarian Function

Abstract
Ovarian function was successfully induced in 2 successive cycles in 2 amenorrheic women using urinary gonadotrophins. When 5 mg of norethindrone acetate was administered along with the gonadotrophin ovarian function persisted. This is further evidence that thia dosage of norethindrone acetate inhibits ovulation by suppression of the midcycle surge of lutelnlzing hormone (LH).