Product summary: 100g powder A pure amino acid powder, fermented from glucose and suitable for vegetarians and vegans. Pure L-Glutamine Amino acid powder Fermented from glucose Suitable for vegetarians and vegans More information: About protein and amino acids Protein makes up the structure of all cells and tissues in the body, including muscle tissue, internal organs, tendons, skin, hair and nails. Amino acids are the "building blocks" of protein and there are 20 of them. 12 of these can be made in the body and so are referred to as non-essential amino acids, while the other 8 are known as essential amino acids (as they must be sourced from the diet). About L-Glutamine Glutamine is a non-essential amino acid and is the most abundant free amino acid in muscle cells. It is a molecule that our body stores in the skeletal muscles and bloodstream, and converts into glucose (blood sugar) when it is needed. L-Glutamine, the natural form of glutamine, is synthesised from 3 other amino acids: ornithine, arginine and proline. It is also a component of glutathione, a nutrient present in virtually every cell. Our body's own levels of glutamine can come under strain in circumstances of metabolic stress, including injuries, illness and even severe emotional distress.