Green Valley Health and Herbs Serving Elmira for over 30 years Glutathione Precursor N Acetyl Cysteine Modulates EEG Synchronization in Schizophrenia Patients: A Double Blind, Randomized, Placebo Controlled Trial PLOS One N.A.C. N Acetylcysteine Vitazan Professional NAC 600 NAC (N acetyl cysteine) is a supplement that supports detoxification, brain health, and lung functionand it's the precursor to the antioxidant glutathione! Key benefits of NAC: Detox Support Helps the liver break