Leuprolide injection (Eligard, Lupron Depot) is used to treat the symptoms associated with advanced prostate cancer. Leuprolide injection (Lupron Depot-PED, Fensolvi) is used in children 2 years of age or older to treat central precocious puberty (CPP; a condition causing girls [usually younger than 8 years of age] and boys [usually younger than 9 years of age] to enter puberty too soon, resulting in faster than normal bone growth and development of sexual characteristics). Leuprolide injection (Lupron Depot) is used alone or with another medication (norethindrone) to treat endometriosis (a condition in which the type of tissue that lines the uterus [womb] grows in other areas of the body and causes pain, heavy or irregular menstruation [periods], and other symptoms).