Overview

• On Truth Social, President Trump told pregnant women to avoid Tylenol unless “absolutely necessary,” urged parents not to give it to young children, and called for separating MMR and varicella shots and delaying hepatitis B until age 12.
• An FDA communication to clinicians reiterated that studies describe an association but do not establish causation, noted contrary evidence, and emphasized that acetaminophen is the only over-the-counter option approved for treating fevers in pregnancy.
• Doctors report immediate effects in clinics, including heightened guilt among parents, requests to space out shots, refusals of standard newborn vaccines, and resistance to Tylenol use for certain neonatal treatments.
• Major medical groups and researchers, including ACOG, dispute claims of causation and point to high-quality studies such as a 2024 Swedish sibling-controlled analysis that found no link between prenatal acetaminophen use and autism.
• Kenvue said the administration’s messaging is incomplete and highlighted existing label advice to consult a health professional, as media reported—but did not confirm—possible FDA label changes and Kenvue shares briefly dipped after Trump’s post.