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Medical experts, health agencies and journalists reacted swiftly to President Trump’s remarks linking prenatal acetaminophen (commercial name Tylenol) use to autism, almost uniformly condemning his claims as misinformation.1 2 Professional associations, including the American Academy of Pediatrics and the American College of Obstetricians and Gynecologists, warned that the available data do not support the claim that acetaminophen causes autism and that such rhetoric only stokes fear.3 These reactions were warranted: a US president offering medical guidance based on sparse or misinterpreted data demands criticism and correction. Yet how the correction is framed is as consequential as the correction itself.