Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health Acetaminophen Use During Pregnancy and Autism Risk Tylenol (acetaminophen) does not cause autism. The FDA, in its statement that there may be an association, confirmed that "a causal relationship has not been established, and studies of millions of children 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 Tylenol and Autism Oxidative Stress and Sunlight Medcram Blog