To avoid some complications in Gestation

Helps in completion of gestation period

Maintains the level of progesterone during pregnancy

Natural, so free from androgenic side-effects as with synthetic progesterone

Dosage :
Prevention of Endometrial Hyperplasia
200 mg PO qHS for 12 days sequentially per 28-day cycle

Secondary Amenorrhea
400 mg PO qHS x 10 days