Is Tylenol Safe During Pregnancy? Understanding Risk Factors Seeking Health Lawsuits Seek to Link Tylenol Ingredient to Autism, ADHD WSJ 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 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