Overview

• Trump posted on Truth Social that pregnant women should avoid Tylenol unless necessary and told parents not to give it to young children, while urging separated MMR doses, delaying hepatitis B to age 12, and spreading vaccines over five visits.
• An FDA letter to clinicians said acetaminophen use in pregnancy may be associated with neurodevelopmental conditions but emphasized that causation is unestablished and that acetaminophen remains the safest over‑the‑counter option for treating fevers in pregnancy.
• Major medical groups, including the American College of Obstetricians and Gynecologists, continue to advise judicious use rather than avoidance, noting two decades of research without proof of causation and known risks from untreated maternal fever.
• Clinicians report immediate effects in offices, with anxious patients second‑guessing past choices, declining newborn hepatitis B shots, and requesting altered vaccine schedules following the president’s remarks.
• International health authorities such as the World Health Organization, along with large studies including a 2024 Swedish sibling analysis, say evidence does not show that prenatal acetaminophen causes autism.