Should you take TYLENOL after a vaccination? TYLENOL There has been lots of misinformation recently about acetaminophen and Autism or ADHD. Here's what you need to know about using Tylenol ( acetaminophen) during pregnancy: Some studies have raised concerns about links Early life acetaminophen exposure, glutathione S transferase genes, and development of adolescent asthma in a high risk birth cohort Journal of Allergy and Clinical Immunology Vaccine rejectionist Jenny McCarthy ridiculed online after again spreading false claim that Tylenol causes autism Genetic Literacy Project Acetaminophen causes neurodevelopmental injury in susceptible babies and children: no valid rationale for controversy