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 (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 New FDA Statement on Acetaminophen and Autism: What It Says and Why It Matters Blog Heninger Garrison Davis, LLC Acetaminophen's Role in Autism and ADHD: A Mitochondrial Perspective Evidence that acetaminophen triggers autism in susceptible individuals has been ignored and mishandled for more than a decade.