Appeals court revives lawsuits claiming link between acetaminophen, ADHD and autism

A federal appeals court has revived hundreds of lawsuits alleging a link between acetaminophen use during pregnancy and the development of ADHD and autism. The 2nd U.S. Circuit Court of Appeals issued a ruling on Monday stating that a lower court was wrong to dismiss testimony from scientific experts provided by plaintiffs.

These experts argued that there is evidence connecting the common pain reliever to neurodevelopmental disorders. The court held that the expert opinions met scientific standards and represented acceptable interpretations of data where scientists often disagree. This ruling does not confirm a causal link between the medication and these conditions, but it does allow the legal proceedings to continue against manufacturers and retailers.

Kenvue, the manufacturer of Tylenol, is among the defendants alongside major pharmacy chains like CVS, Walgreens, Walmart, and Target. In a response to the court's decision, Kenvue stated that independent science does not support these claims and that the company remains confident in the safety of its product. The company indicated it intends to continue defending these cases.

This development comes after recent warnings from government officials regarding the use of acetaminophen during pregnancy. While the court's decision focuses on procedural matters regarding expert testimony, the litigation represents a significant legal challenge for the pharmaceutical industry. The case will now return to the lower court for further proceedings as both sides prepare to present their scientific arguments.