Fluoxymesterone is a testosterone derived anabolic androgenic steroid or more specifically a structurally altered form of Methyltestosterone. Halotestin is the testosterone hormone with an added methyl group at the 17th carbon position to allow oral ingestion. It also possesses an added fluoro group at carbon 9 and 3 and a hydroxyl group at carbon 11. These modifications inhibit the steroid’s aromatization and greatly increase its androgenic nature. By its structural design, Halotestin carries an anabolic rating of 1,900 and an androgenic rating of 850. All ratings are measured against pure testosterone, which carries a rating of 100 in both categories. This means Halo as it’s often known carries ratings that are almost beyond reason, but its anabolic rating is tremendously deceiving. While it carries a massive anabolic rating, its anabolic translation in human beings appears to be near zero. This steroid simply doesn’t translate into any notable anabolic effect and will primarily function by androgenic activity. Due to the strength and aggression promotion, this makes Halotestin a popular steroid among power lifter, strength athletes and fighters shortly before competition. A few weeks of use leading up to competition is very common, and the boost in strength can potentially be greater than any other anabolic steroid could provide. This same strength and aggression can also be useful to the competitive bodybuilder a few weeks out from his show.

