Creatine (C4H9N3O2) is a nitrogenous organic acid that is found naturally in vertebrates and is important for energy storage. Creatine also helps supply all of the energy to the muscles throughout the body. It was discovered in 1832 by Michel Eugene Chevreul, who named it creatine after the Greek word for meat.
Creatine supplements are frequently used by athletes and bodybuilders because they help build muscle mass. Despite some side effects such as dehydration, muscle cramping and diarrhea, many athletes insist on using creatine supplements because of the benefits they receive from gaining muscle mass.