glycine is the precursor for glutathione Amazon.com: VINATURA GLYNAC Supplement 1000MG - & NAC Supplement Synthesis of glutathione from glutamate,

[PubMed] [Google Scholar] Tate S

Enhances Brain Health and Cognitive Function Neuroprotective benefits include: Protection against neurodegenerative diseases Enhanced memory and focus Reduced brain fog Improved mental clarity and concentration Research suggests that glutathione deficiency is linked to cognitive decline, making supplementation particularly important for brain health

doi: 10.1016/j.bj.2017.12.001 13

Wallace recognized that the immediate precursor to glutathione, gamma-glutamylcysteine (GGC, trademarked "Glyteine") was the only biochemistry-based theoretical option for increasing cellular glutathione above homeostasis

In addition, there is increasing use of NAC in patients with chronic liver disease for multiorgan failure or hepatorenal syndrome