Flumetex is an agonist of the androgen receptor , similarly to androgens like testosterone and DHT.It is a substrate for 5α-reductase like testosterone, and so is potentiated in so-called “androgenic” tissues like the skin, hair follicles, and prostate gland via transformation into 5α-dihydrofluoxymesterone.As such, fluoxymesterone has a relatively poor ratio of anabolic to androgenic activity similarly to testosterone and methyltestosterone. However, fluoxymesterone is nonetheless proportionally less androgenic and more anabolic than methyltestosterone and testosterone.

It is used by bodybuilders to promote muscle growth and definition.
HALOTESTIN
Fluoxymesterone