Glutathione Precursor, N Acetyl Cysteine, Improves Mismatch Negativity in Schizophrenia Patients Neuropsychopharmacology 3 Glutathione Rescue Normally, glutathione binds NAPQI and converts it into non toxic byproducts (cysteine + mercapturic acid) that are excreted. Example: Glutathione is your liver's safety net against toxins. The mechanism of action of N acetylcysteine (NAC): The emerging role of H2S and sulfane sulfur species ScienceDirect Glutathione IM The Center Medical NAC Health or NAD? Here's Why You Probably Need Both: Envizion Medical: Wellness Center