Tylenol Autism and ADHD Lawsuits

Updated October 2026

Families allege that taking acetaminophen (Tylenol or store-brand versions) during pregnancy increased the risk of autism spectrum disorder or ADHD in their children, and that the products should have warned pregnant women.

The defendants deny that acetaminophen causes autism or ADHD, and the science remains disputed.

Where the Litigation Stands

• Case: In re: Acetaminophen – ASD-ADHD Products Liability Litigation, MDL No. 3043, U.S. District Court for the Southern District of New York, before Judge Denise L. Cote.
• Revived: in July 2026, the Second Circuit held that the trial court wrongly excluded the plaintiffs’ key experts, reviving the cases. Rehearing was denied in October 2026.
• Next steps: the defendants have said they will seek Supreme Court review, and the experts may be challenged again. No trial dates are set.

Who May Qualify

• The mother took acetaminophen during pregnancy
• The child has been diagnosed with autism spectrum disorder or ADHD
• Claims are brought by a parent or guardian on the child’s behalf

What to Gather

• The child’s diagnosis records
• Prenatal records, or your best recollection of when and how often you took acetaminophen
• Which brands you used, if you remember

There is no blame on parents in these cases. The question is what the manufacturers and sellers knew and whether they warned.

Frequently Asked Questions

Do I need proof of what I took while pregnant?

Prenatal records help, but many families rely on their own recollection. We will help you sort out what you can document.

Is there a deadline?

Yes. Deadlines for injuries before birth depend on the child’s age, so ask as soon as you can.

Will my child’s name be public?

Courts routinely protect the identities of minors.