Alcohol, found in beer, wine, and liquor, is the most widely abused drug after tobacco. Legal for adults over 21 in the U.S., it’s consumed to produce feelings of relaxation and confidence. However, drinking beyond the body’s ability to metabolize it leads to intoxication, affecting all organs and impairing judgment, coordination, and memory. One standard drink equals a 12oz beer, 5oz wine, or 1.5oz shot. Intoxication varies based on body mass and tolerance.