Leuprolyn 45mg Injection helps treat prostate cancer in men. Doctors give it to women too for dealing with endometriosis. That is a condition where the lining of the uterus grows in places it should not, like outside the organ itself. It leads to a lot of pain along with heavy periods or ones that do not come regularly. The injection also manages uterine fibroids pretty well. On top of that, this medicine takes care of central precocious puberty. In that case, children start going through puberty much earlier than they normally would.