Vaccinations Less Effective Following Tylenol Mommyhood101 There's always a lot of noise online claiming that giving your child Tylenol (acetaminophen) for fever is harmful, disrupts development, or somehow blocks natural healing. As a board certified pediatrician who actually cares I used to call this my vaccine detox protocol, but I think vaccine prep is better suited. So we're doing a little update, and this time with a functional FNP!!! @jess_np_complete_renewal Evidence that acetaminophen triggers autism in susceptible individuals has been ignored and mishandled for more than a decade. Evidence That Acetaminophen Triggers Autism in Susceptible Individuals Has Been Ignored and Mishandled for More than a Decade[v1] Preprints.org