Vaccines do not cause autism. Neither does acetaminophen (Tylenol) use in pregnancy. Decades of rigorous research and systematic reviews have shown no credible link. Continuing to promote these myths is not only Acetaminophen causes neurodevelopmental injury in susceptible babies and children: no valid rationale for controversy 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. Tylenol and autism: What parents deserve to know Nini Munoz , PhD. Since the administration claimed Tylenol as a cause of autism, we've seen a number of alternative and 'integrative' practitioners talking Instagram