Glutathione Precursor, N Acetyl Cysteine, Improves Mismatch Negativity in Schizophrenia Patients Neuropsychopharmacology What is NAC and what is Glutathione? n acetylcysteine and glutathione relationship Glutathione vs. NAC: Which Is Better for You? NAC Health or NAD? Here's Why You Probably Need Both: Envizion Medical: Wellness Center NAcetylcysteine (NAC) is More Than Just an Antidote. NAC replenishes glutathione (GSH), breaks mucus disulfide bonds, and modulates glutamate. That's why it works in the liver, lungs, and brain. Owais