<unk> , sold under the brand names Halotestin and Ultandren among others, is an androgen and anabolic steroid (AAS) medication which is used in the treatment of low testosterone levels in men, delayed puberty in boys, breast cancer in women, and anemia. It is taken by mouth. Side effects of<unk>  include symptoms of masculinization like acne, increased hair growth, voice changes, and increased sexual desire. It can also cause liver damage and cardiovascular side effects like high blood pressure. The drug is a synthetic androgen and anabolic steroid and hence is an agonist of the androgen receptor (AR), the biological target of androgens like testosterone and dihydrotestosterone (DHT). It has strong androgenic effects and moderate anabolic effects, which make it useful for producing masculinization.<unk>  was first described in 1956 and was introduced for medical use in 1957. In addition to its medical use,<unk>  is used to improve physique and performance. The drug is a controlled substance in many countries and so non-medical use is generally illicit.
Fluoxymesterone
Aminoglutethimide
Ethinylestradiol sulfonate
Hydroxyestrone diacetate
Ethisterone
Ethinylestradiol sulfate
Formestane
Retroprogesterone