Testosterone Cypionate

Testosterone cypionate, sold under the brand name Depo-Testosterone among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low testosterone levels in men. It is also used in hormone therapy for transgender men. It is given by injection into muscle or subcutaneously, once every one to four weeks, depending on clinical indication.Testosterone cypionate is used primarily in androgen replacement therapy. It is currently FDA approved for the treatment of primary or hypogonadotropic hypogonadism (either congenital or acquired). Its safety in andropause (late-onset hypogonadism in men) has not yet been established. It is currently used off-label for breast cancer, breast disorders, delayed puberty in boys, oligospermia (low sperm count), hormone replacement therapy in transgender men, and osteoporosis.Side effects of testosterone cypionate include virilization among others.Testosterone cypionate, or testosterone 17β-cyclopentylpropionate, is a synthetic androstane steroid and a derivative of testosterone. It is an androgen ester; specifically, it is the C17β cyclopentylpropionate (cypionate) ester of testosterone.Testosterone cypionate was introduced for medical use in the United States in 1951 under the brand name Depo-Testosterone.Testosterone cypionate is the generic name of the drug and its USP. The drug does not have an INN, USAN, or BAN. It has also been referred to as testosterone cipionate, as well as testosterone cyclopentylpropionate or testosterone cyclopentanepropionate.