Why NAC and Glutathione are Important for Immune Health and More Wellness Hub Glutathione vs NAC: Which Antioxidant Powerhouse Fits Your Health Goals Swanson Health Swanson Vitamins NAC stands for N acetylcysteine. It is a stable form of the amino acid cysteine. Your body uses it to make glutathione, one of your main antioxidants. Here is how it works and Is It Better to Take Glutathione or NAC? Understanding the Benefits of These Antioxidants Cymbiotika CYMBIOTIKA