It's a synthetic androgen and anabolic steroid and an agonist of the androgen receptor. It has strong androgenic effects and weak anabolic effects, it useful for producing masculinization ans has no estrogenic effects. It's used to improve physique and performance. The drug is a controlled substance in many countries, so non-medical use is illicit. Also it's used in the treatment of androgen deficiency in male hypogonadism, anemia, and to support male fertility among other indications, to treat delayed puberty in men.