<unk> , sold under the brand names Delatestryl and Xyosted among others, is an androgen and anabolic steroid (AAS) medication which is used mainly in the treatment of low<unk>  levels in men. It is also used in hormone therapy for transgender men. It is given by injection into muscle or subcutaneously usually once every one to four weeks. Side effects of<unk>  include symptoms of masculinization like acne, increased hair growth, voice changes, and increased sexual desire. 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<unk>  and dihydrotestosterone (DHT). It has strong androgenic effects and moderate anabolic effects, which make it useful for producing masculinization and suitable for androgen replacement therapy.<unk>  is a<unk>  ester and a long-lasting prodrug of<unk>  in the body. Because of this, it is considered to be a natural and bioidentical form of<unk> .<unk>  was introduced for medical use in 1954. Along with<unk>  cypionate,<unk>  undecanoate, and<unk>  propionate, it is one of the most widely used<unk>  esters. 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.
Testosterone enanthate
Testosterone decanoate
Testosterone undecanoate
Testosterone undecylenate
Testosterone acetate
Testosterone furoate
Testosterone propionate
Testosterone valerate