L-glutamine (chemical formula: C5H10N2O3) is an alpha-amino acid that is one of the 20 amino acids consisting proteins. L-glutamine is a non-essential amino acids and is also the most abundant amino acids in human bodies. It is involved in many important biological processes. For example, it is a building block for the protein synthesis as one key amino acid; it is used in the biosynthesis of urea and purines for nucleic acid synthesis; it is a substrate for the biosynthesis of neurotransmitters; it is also an important sources of cellular energy generation. L-glutamine provides many benefits to the body such as improving gastrointestinal health, aiding the treatment of ulcer and leaky gut, promoting muscle growth, improving diabetes and blood sugar as well as aiding in the treatment of cancer.