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 NAC MegaFood N Acetylcysteine: An Old Drug With Variable Anti Influenza Properties Semantic Scholar Metabolic Maintenance, NAC, 60 Capsules NAC (N Acetyl L Cysteine) Supplement BrainMD BrainMD Why NAC (N Acetylcysteine) in an IV? Reduces oxidative stress NAC helps replenish glutathione, one of your body's most powerful antioxidants. Supports detoxification Assists in clearing toxins