Overview

• After White House statements alleging a Tylenol–autism link, the FDA began a formal labeling review and sent a letter advising clinicians to consider minimizing acetaminophen use in pregnancy.
• WHO said there is no scientific proof that prenatal paracetamol causes autism and reiterated that vaccines, including those with thimerosal, do not cause autism.
• U.S. obstetrics groups ACOG and SMFM continue to recommend acetaminophen for treating fever and pain in pregnancy, noting the risk of leaving fever untreated and the lack of evidence for causation.
• Clinicians cite large, more rigorous studies—including a 2024 Swedish sibling analysis—that undermine causal claims despite associations reported in some observational research.
• Kenvue, maker of Tylenol, rejects a causal link and warns that FDA actions and presidential remarks could fuel new lawsuits and harm the brand as patient concerns surge.