<unk>  is used in the treatment of moderate to severe pain associated with endometriosis in premenopausal women. Endometriosis is a condition in which the endometrium, the inner lining of the uterus, grows outside of the uterus into surrounding tissues and causes symptoms such as pelvic pain and infertility. Around 10% of women may be affected by endometriosis.<unk>  significantly decreases symptoms of dysmenorrhea (menstrual pelvic pain), non-menstrual pelvic pain, and dyspareunia (pain during sexual intercourse) in women with endometriosis. The medication is used at a lower dosage of 150 mg once per day or at a higher dosage of 200 mg twice per day, depending on the severity of symptoms. The effectiveness of<unk>  in the treatment of symptoms of endometriosis was demonstrated in the 6-month Elaris Endometriosis I and II (EM-I and EM-II) phase III clinical trials. In Elaris EM-I, the percentage of women who had a clinical response with respect to dysmenorrhea was 46.4% in the lower-dose<unk>  group and 75.8% in the higher-dose<unk>  group, as compared with 19.6% in the placebo group; in Elaris EM-II, the corresponding percentages were 43.4% and 72.4%, as compared with 22.7% (P < 0.001 for all comparisons). In Elaris EM-I, the percentage of women who had a clinical response with respect to non-menstrual pelvic pain was 50.4% in the lower-dose<unk>  group and 54.5% in the higher-dose<unk>  group, as compared with 36.5% in the placebo group (P < 0.001 for all comparisons); in Elaris EM-II, the corresponding percentages were 49.8% and 57.8%, as compared with 36.5% (P = 0.003 and P < 0.001, respectively). The reductions in symptoms of endometriosis with<unk>  resulted in an improved quality of life. The duration of use of<unk>  in the treatment of endometriosis should be limited due to a progressive risk of bone loss, and the lowest effective dosage should be used.<unk>  can be used for up to 24 months at the 150 mg once per day dosage and for up to 6 months at the 200 mg twice per day dosage. Because of its relatively short duration,<unk>  should be taken at approximately the same time each day. In the case of twice-daily administration,<unk>  should be taken at approximate 12-hour intervals, for instance once in the morning and once at night. It can be taken with or without food.<unk>  is approved only for the treatment of endometriosis. Other approved and off-label uses of GnRH antagonists in general are the same as those of GnRHR desensitization therapy with GnRH agonists such as leuprorelin, and include uterine fibroids and breast cancer in premenopausal women, prostate cancer in men, precocious puberty in children, and hormone therapy in transgender adolescents and adults, among others. Available forms<unk>  is available in the form of Orilissa 150 and 200 mg oral tablets. The 150 mg tablets are light pink, oblong, and film-coated with "EL 150" debossed on one side, while the 200 mg tablets are light orange, oblong, and film-coated with "EL 200" debossed on one side. The inactive ingredients in the tablets include mannitol, sodium carbonate monohydrate, pregelatinized starch, povidone, magnesium stearate, polyvinyl alcohol, titanium dioxide, polyethylene glycol, talc, and a distinct color additive (carmine high tint in the 150 mg tablets and iron oxide red in the 200 mg tablets).
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