Testosterone acetate, a testosterone ester, is an androgen. It is a steroid lipid molecule considered to be practically insoluble (in water) and basic. It is an anabolic steroid and testosterone prodrug. Testosterone acetate has a faster rate of absorption in the body then other esters. In combination with two other testosterone esters, testosterone valerate and testosterone undecanoate (slow and fast-acting esters) is essentially a low dosed alternative to Sustanon and is used primarily to treat impotence, weakness, fatigue, and hypogonadism in male breeding animals and also as a general protein-sparing anabolic.