Nolvadex also is known as Tamoxifen is not an anabolic - androgenic steroid but goes under the category PCT (post cycle therapy) product because it is an anti-estrogen. For both male and female bodybuilders, however, it is a very useful and recommended compound during or after a cycle. Bodybuilders use Nolvadex to protect against side effects like growth of bitch tits (male boobs) or after the cycle to bring back the endogenous levels to normal. If the body's own estrogen level is unusually high from the use of Steroids, an undesired growth of breast glands can occur. Despite this, it is mostly male bodybuilders who use Nolvadex and fewer women.