Anabolic steroids are used to improve physical performance and muscle growth. When taken for a long time in high doses and without medical supervision, they can cause eccentric and irrational behavior and a wide range of somatic side effects.

Anabolic steroids include testosterone and other drugs that are pharmacologically close to testosterone and cause muscle growth.

Anabolic steroids have androgenic effects (buy steroids Impaired hair growth, libido, aggression) and anabolic effects (eg, increased protein absorption, changes in muscle mass).

The androgenic effects cannot be separated from the anabolic ones, but several anabolic steroids have been synthesized with the aim of minimizing the androgenic effects.

Testosterone is rapidly destroyed in the liver; Testosterone tablets are inactivated too quickly to be effective, and injectable testosterone must be modified (eg, by esterification) to slow absorption and delay degradation.

Analogues modified via 17-b-alkylation are often effective when taken by mouth, but can cause more side effects. Transdermal preparations are also available.