Enanthate

enanthate, sold under the brand name Delatestryl among others, is an androgen and (AAS) medication which is used mainly in the treatment of low levels in men. It is also used in hormone therapy for transgender men. It is given by injection into muscle usually once every two to four weeks.

Side effects of enanthate include symptoms of masculinization like acne, increased hair growth, voice changes, and increased sexual desire. The drug is a synthetic androgen and and hence is an agonist of the androgen receptor (AR), the biological target of androgens like and (DHT). It has strong androgenic effects and moderate effects, which make it useful for producing masculinization and suitable for androgen replacement therapy. enanthate is a ester and a long-lasting prodrug of in the body. Because of this, it is considered to be a natural and bioidentical form of .

enanthate was introduced for medical use in 1954. Along with cypionate, undecanoate, and propionate, it is one of the most widely used esters. In addition to its medical use, enanthate is used to improve sique and performance. The drug is a controlled substance in many countries and so non-medical use is generally illicit.