Glycine is a nonessential amino acid with a sweet taste. It has healing as well as antioxidant properties and is involved in the synthesis of the liver’s bile acids, favoring it’s detoxification. Large amounts of glycine are also found in the prostate fluid , which could mean that glycine plays a protective role for this gland . Glycine also plays an important function for the brain as a neuromodulator . Since it possesses many calming properties on neurons , glycine thereby improves sleep quality and reduces cortisol.