Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Sugar Free Glutathione is one of the body's most important antioxidants, helping to neutralize free radicals and reduce oxidative stress. It assists in detoxifying harmful substances in the liver, making it crucial Amino acid sequence alignment of glutathione peroxidases of the GPx4 Download Scientific Diagram Same tuna sandwich. Two very different outcomes. Why? For people with chronic illness, the issue often isn't more exposure it's a body that can't clear what everyone else is exposed to.