NAC vs. Glutathione: Which One Is Better for Your Health? The Use and Potential Benefits of N Acetylcysteine in Non Acetaminophen Acute Liver Failure: An Etiology Based Review N Acetyl Cysteine (NAC) + Glycine 800mg 60 Caps Metabolic Maintenance, NAC, 60 Capsules 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