Figure 2 from Regulation of neuronal glutathione synthesis. Semantic Scholar Glutathione is called the body's master antioxidant: protects against oxidative stress has anti Siim Land Rattibha The mechanism of action of N acetylcysteine (NAC): The emerging role of H2S and sulfane sulfur species ScienceDirect What is NAC (N Acetyl L Cysteine)?, NAC is a derivative of the amino acid L Cysteine, designed to be more stable and bioavailable than regular cysteine on its own., Lets break it down:, Cysteine