WEDNESDAY, Oct. 22, 2025 (HealthDay News) — The maker of Tylenol is urging U.S. health regulators not to add an autism warning label to it and other pain relievers containing acetaminophen, calling the request “unsupported by the scientific evidence and legally and procedurally improper." Kenvue’s response, dated Oct. 17, came after a citizen petition sought new pregnancy warnings for acetaminophen. The petition, filed by the Informed Consent Action Network, asked the U.S. Food and Drug Administration (FDA) to note a possible link between prenatal exposure and autism or attention-deficit/hyperactivity disorder (ADHD).