IT IS AN ALIPHATIC AMINO ACID WHICH IS ESSENTIAL CONSTITUENT OF DIET. INSUFFICIENT INTAKE OR DEFICIENCY LEADS TO DECREASE IN BODY WEIGHT, DIZZINESS, FATIGUE, CHRONIC TIREDNESS, ANAEMIA,ENZYME DISORDERS ETC., IT IS THERAPEUTICALLY USED TO ENHANCE GROWTH OF CHILDREN, AND TO ASSIST GASTRIC FUNCTION AND APPETITE. L-LYSINE, WHICH IS A LIMITING AMINO ACID, IS ALSO VERY ESSENTIAL TO MAINTAIN POSITIVE NITROGEN BALANCE.