Stimulants: Drugs that increase activity of the central nervous system. Include caffeine, ephedrine, and other amphetamines. Increase alertness, reduce fatigue, increase aggressiveness, increase performance in aerobic activities. Also may create loss of judgement. Caffeine will dehydrate athlete.

Anabolic-Androgenic Steroids: Derivatives of male sex hormone testosterone.

Human growth hormone (HGH): Helps body recover quickly. Serious side effects include enlargement of peripheral body parts, larger physical stature, enlargement of heart.

EPO: Increases capacity of blood to carry oxygen.

Brake drugs: Female gymnasts use to retard growth.

Nutritional aids: Creatine, protein.

Blood doping: Removing blood, storing it, re-infusing it after 6 weeks to increase red blood cell count. Can lead to heart failure, pulmonary edema, and death.

Beta Blockers: Block sympathetic nerve endings. Decreases anxiety, heart rate, nervousness, and tachycardia. Used with hypertension and heart disease. Use in sports that require steadiness.