Leuprosta Depot 22.5 mg Injection belongs to the class of ‘anticancer or anti-neoplastic agents’, primarily used to treat prostate cancer in men, breast cancer and endometriosis in women and precocious puberty (early puberty) in children. Prostate cancer is the prostate gland’s cancer (a small gland under the bladder secretes fluid that nourishes and protects sperm) found only in men. Breast cancer is a type of cancer that develops in breast cells stimulated by a female sex hormone called oestrogen.