AOR L-Glutamine Powder - Supports immunity and digestion after periods of physical stress. L-glutamine is the most abundant free amino acid in the body. It is critical for many essential functions including the optimal operation of the kidneys, pancreas, gall bladder, liver, intestines and the brain. L-Glutamine supports the immune system and is a precursor for glutathione, one of the body’s most important antioxidants. Those who are under undue stress, suffer from leaky gut or have weakened immunity may benefit from L-glutamine; as well as those seeking to increase their muscle mass and improve exercise recovery.