The amino acid glycine plays a key role in maintaining a healthy central nervous system (CNS).* It is considered one of the most important inhibitory neurotransmitters in the CNS, particularly in the brainstem and spinal cord.* Studies show glycine may help improve memory retrieval in individuals with sleep-depriving conditions such as jet lag and overwork.* Glycine also plays a key role in phase II liver detoxification by having a direct effect on toxin elimination or by increasing the level of glutathione.*