What Is Acetaminophen? Definition, Uses, Side Effects, and Risks Olympic Behavioral Health Exposure to acetaminophen and all its metabolites upon 10, 15, and 20 mg kg intravenous acetaminophen in very preterm infants Pediatric Research Tylenol, Autism, And The Glutathione Connection OC Integrative Medicine 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.