The most abundant amino acid found in muscles;helps build and maintain muscle tissue;helps prevent muscle wasting that can accompany prolonged bed rest or diseases such as cancer and AIDS;a "brain fuel"that increases brain function and mental activity;assists in maintaining the proper acid/alkaline balance in the body;promotes a healthy digestive tract;shortens the healing time of ulcers and alleviates fatigue, depression and impotence;decreases sugar cravings and the desire for alcohol;recently used in the treatment of schizophrenia and senility.