L-Glutamine (Glutamine) is an amino acid that can support the immune system, cause gastrointestinal mucosa maintenance action and may reduce cravings for sugar. The body can synthesize L-Glutamine; however, in times of stress, the body cannot make enough and supplementation may be required to prevent a deficiency. Kirkman's L-Glutamine is made from the highest quality, chemically pure L-Glutamine available.