Studies show children with autism have significantly lower levels of glutathione, the body's master antioxidant. Without enough glutathione, the body struggles to eliminate toxins, making it harder to cope with everyday Tylenol can lower the body's key antioxidant, glutathione, though this isn't seen on routine labs. But mechanistic data clinical proof, so we still need good trials. The Tylenolautism link isn't clear. Amazon.com: Heliocare Skin Care Dietary Supplement: 240mg Polypodium Leucotomos Extract Pills Antioxidant Rich Formula with Fernblock and PLE Technology 60 Veggie Capsules : Health & Household Leucovorin and Autism Spectrum Disorder Emerging Clinical Insights