Tylenol Glutathione Kizer Wellness LLC Tylenol and Glutathione: A Closer Look At Their Relationship Is Tylenol Safe During Pregnancy? Risk Factors, Not Causation Researchers are studying a possible link between acetaminophen (Tylenol) use during pregnancy and higher autism or ADHD risk. It may lower glutathione, an important antioxidant for brain development. No cause has been Tylenol's Impact on Glutathione and Liver Damage The real danger of Tylenol isn't autism it's liver failure. Acetaminophen, the active ingredient in Tylenol and many cold and flu medications, is one of the leading causes of liver failure