Jenny McCarthy's Glutathione and Tylenol Claims: Medical Toxicologist Weighs In MedPage Today Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health Acetaminophen causes neurodevelopmental injury in susceptible babies and children: no valid rationale for controversy 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 Actress and longtime anti vaccine activist Jenny McCarthy took to social media to weigh in on recent debates about acetaminophen (Tylenol), vaccines, and autism, sharing her concerns about glutathione