It is used primarily to treat a variety of gynecological conditions related to progesterone deficiency. This includes menstrual disorders such as irregular periods, dysmenorrhea (painful periods), and premenstrual syndrome (PMS). It is also commonly prescribed for managing endometriosis, a condition where tissue similar to the lining inside the uterus grows outside of it, causing pain and potentially affecting fertility. It is used in hormone replacement therapy (HRT) to counteract the effects of estrogen on the endometrium and reduce the risk of endometrial hyperplasia. Additionally,it supports early pregnancy in women with a history of recurrent miscarriages due to luteal phase insufficiency. The medication should be taken as directed by a healthcare professional to ensure safety and effectiveness.