SP Oxanobol is a steroid derived from dihydrotestosterone. It was designed to have a clear separation between anabolic and androgenic effects, and without estrogenic effects. Anavar is known for promoting quality muscle mass gains, and strength, with no notable side effects. Miligram per milligram is 6 times more anabolic than the testosterone itself without the androgenic effects associated with it. But muscle mass gains are not impressive at all, compared to testosterone. It is the preferred steroid for those who will strike, its anabolic effects being useful during weight loss treatments. It has been found that oxandrolone at reasonable doses has no major side effect. This is also due to the fact that it was initially designed for women and children.