N-Acety-L-Glutamine is an amino acid that is not synthesized by the human body and must be obtained through diet. It is a precursor to glutamate, which is an important neurotransmitter in the brain. N-Acetyl-L-glutamine has been shown to have neuroprotective effects against various metabolic disorders including diabetes, bowel disease, and microdialysis probes. The effect of N-acetyl-L-glutamine on neuronal death can be observed using a reaction solution containing sodium citrate and glucose injection. N-acetylglutamine has been shown to increase the activity of enzymes such as citrate synthase in this reaction solution