La fluoxymestérone est un dérivé synthétique de la testostérone, mais c'est notamment en réalité un dérivé de la Méthyltestostérone (Testostérone méthylée).
Il est généralement considéré comme un stéroïde anabolisant oral très puissant, incapable de s'aromatiser en œstrogène et qui présente également une très forte force androgène..
Effects
maintenance and gaining of lean mass and tissue repair following various conditions of trauma (burns, bone fractures, malnutrition, muscle-wasting diseases, treatment of paraplegics, and as an adjunct to chronic administration of corticosteroids).
Males its use was indicated for the treatment of insufficient androgen production (hypogonadism or andropause).
In females, Halo would be approved for use in treating chronic dysfunctional uterine bleeding as well as female breast cancer.
Halotestin will exert performance enhancing benefits without the unwanted increases in weight that may slow down an athlete, such as a sprinter, who requires the least weight as possible in order to maximize speed efficiency while still receiving that benefit of performance enhancement.