Anabolic supplements are also called androgenic anabolic steroid supplements. They are used by athletes and body builders because these supplements help to build lean muscle mass and improve skeletal muscle growth. Anabolic supplements are derived from the male hormone testosterone. These supplements increase muscle mass by causing muscle fiber hypertrophy, where there is an increase in the cross sectional area of muscle fiber. They also improve fat oxidation, which means that there will be less accumulation of fat and improvement in lean muscle mass. Anabolic supplements stimulate the release of growth hormone, thereby increasing the rate of growth. These supplements are available in the form of liquids or pills. They can be injected into the body or taken orally. They may be taken in weekly or monthly cycles, where they are used alternately with other growth and body building supplements. Anabolic supplements cause side effects like headaches, acne, stomach pain, mood swings, aggression, muscle cramps, fluid retention. They can also cause dangerous side effects like heart problems, liver problems, and increased cholesterol. Excessive use of such supplements can cause the development of feminine characteristics in men and male characteristics in women. These supplements may be prescribed by the doctor in some cases, but most of the time, anabolic supplements are used illicitly to improve physical appearance and athletic abilities.