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4-hydroxytestosterone (4-OH-T) is a synthetic form of testosterone, a naturally occurring hormone in the body. It is used to treat conditions such as hypogonadism, delayed puberty, and male infertility. It is also used in bodybuilding and sports to increase muscle mass and strength.

Toxic effects of 4-OH-T include increased risk of prostate cancer, liver damage, and cardiovascular disease. It can also cause acne, hair loss, and increased aggression.

Associated brand names include AndroGel, Testim, and Axiron.

  • 4-hydroxytestosterone
  • anabolic steroid
  • androgen
  • sport doping

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