Glycine is a nonessential amino acid and one of the simplest amino acids present in the body. Glycine aids in many important body functions, such as the creation of proteins, peptides, etc and assists GABA with the neurotransmitters of the Central Nervous System. There are many more tasks of glycine within the body, this is just a few. As glycine is a nonessential amino acid, the body has the ability to produce this amino acid independently. A health care professional should be consulted before taking glycine.