Appraising the Role of Astrocytes as Suppliers of Neuronal Glutathione Precursors Glutathione: The Critical Role It Plays in Multiple Sclerosis Root A Vi Opt1 imports CoA precursors as glutathione mixed disulfides ScienceDirect 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