Glutathione and Brain Health: What It Is, Sources, And Benefits Glycine and N acetylcysteine (NAC) are amino acidbased nutrients that serve as precursors for glutathione, one of the body's most important intracellular antioxidants. Glutathione plays a central role in reducing oxidative stress, supporting Alzheimer's and The Glutathione Story Research Communities by Springer Nature Glutathione in Brain: Overview of Its Conformations, Functions, Biochemical Characteristics, Quantitation and Potential Therapeutic Role in Brain Disorders Neurochemical Research Springer Nature Link