Everyone says NAC can make glutathione. Wrong. Evidence against this is staring right at you. As you can see here, my wife's GCLC gene is genetically slower. Thus, she cannot convert Cysteine Toxicity of Glutathione Binding Metals: A Review of Targets and Mechanisms Should You Take Glutathione? PDF) Effects of Arsenic (AsIII) on Lipid Peroxidation, Glutathione Content and Antioxidant Enzymes in Growing Pigs