Testosterone is responsible for normal growth and development of the male sex organs and for the maintenance of secondary sex characteristics which include growth and maturation of the prostate, seminal vesicles, penis, and scrotum. Furthermore, testosterone help in thickening of the vocal cord, the alteration in body musculature and fat distribution, and the retention of nitrogen, water, and electrolytes. Anabolic steroids are associated with numerous side effects. Most of the side effects are mild and reversible. However, some are permanent and life threatening.
Dosages used by athletes can be much higher.
This is a veterinary AS which is used to beef up cattle and race horses. It is also used by many bodybuilders. This drug is used by athletes for two reasons. First it is used to inflame muscle just before competition. It is also used to help lagging body parts grow.