nolvadex for men weight loss. The medicine is used to treat breast cancer in women, ovary tumors in women, prostate cancer and other tumors in men, and osteoporosis (a disease that causes bones to become weak or brittle) in women. However, it may also be effective at preventing these problems from occurring if you use the medication regularly while you are still able to get pregnant. Nolvadex (for example: tamoxifen citrate; oxitrim; kecitabine) is a drug treatment originally developed for treating breast cancer in postmenopausal female patients whose estrogen levels have declined too low. It works by helping prevent the development of new blood vessels which would help grow tumors on your breasts when they occur during this time period. This helps reduce tumor growths by reducing their supply of blood nutrition..