This product has 2 different capsules. One capsule contains a combination of 3 medications: elagolix, estradiol, and norethindrone. The other capsule contains only elagolix. It is used by women who have not gone through menopause to help manage heavy menstrual bleeding due to uterine fibroids. Elagolix works by decreasing your body's production of certain hormones (luteinizing hormone, follicle-stimulating hormone), which leads to lower amounts of female sex hormones (estrogens). Estradiol is used to decrease bone loss caused by elagolix, while norethindrone is used to help lessen the risk of cancer of the uterus due to estradiol.