Glutamine is the most abundant amino acid in the body and is involved in more metabolic processes than any other amino acid. It is also the most abundant amino acid in the blood and in the free amino acid pool of skeletal muscle. Glutamine stimulates the synthesis and inhibits the degradation of proteins and is an energy source for muscle cell division. Glutamine is especially important in serving as a source of fuel for cells lining the intestines and for the proper functioning of white blood cells. It is important to these particular cells because glutamine is utilized at higher rates by these and other rapidly dividing cells. Without glutamine these cells will not divide properly. Glutamine is a major amino acid in most foods. Eggs are good sources of glutamine. Glutamine has been shown to boost immune function and fight infection. Glutamine promotes the healing of peptic ulcers.