Glutathione and Autoimmune Disease Master Antioxidant What Taking Glutathione Can Do for Your Body During Chronic Illness Planet Glutathione is one of the body's most important and potent antioxidants. Antioxidants are substances that reduce oxidative stress by combating free radicals in the body. While most antioxidants are found Myth busting, Acetaminophen version. "Avoid Acetaminophen (Tylenol) because it causes glutathione depletion". Truth?? As a pediatrician and ER doctor and as moms we're often asked about this. And we understand why: