Tylenol Autism & ADHD Lawsuits: Is Acetaminophen Unsafe During Pregnancy?

Plaintiffs allege that Tylenol makers and distributors failed to warn pregnant users about a heightened risk of autism and ADHD in their children. Although the multidistrict litigation judge issued a summary‑judgment ruling in favor of the defendants in August 2024, the decision is now being challenged on appeal.

Tylenol Autism & ADHD Litigation — Key Facts (June 2025)

Tylenol (acetaminophen) lawsuits are alleging that the drug’s makers and major retailers failed to warn pregnant consumers that prenatal exposure could raise the risk of neuro‑developmental disorders in their children (drugwatch.com).

These cases were centralized in a federal multidistrict litigation (MDL). In August 2024 the presiding judge granted summary judgment for the defendants; the plaintiffs have filed an appeal, so no settlements or jury verdicts have been reached.

Plaintiffs point to observational research cited in the complaints. One American Journal of Epidemiology study found that children whose mothers used acetaminophen during pregnancy showed a 34 % higher risk of ADHD, a 19 % higher risk of autism spectrum disorder, and a 24 % increase in hyperactivity symptoms.

“Increasing experimental and epidemiological research shows that prenatal exposure to [acetaminophen] alters fetal development, which significantly increases the risks of neurodevelopmental disorders, including but not limited to, ASD and ADHD.”

— Rutledge v. Walmart Stores, Inc.

Core allegations are that manufacturers and retailers:

• Knew or should have known of the potential link between prenatal acetaminophen exposure and ASD/ADHD;

• Failed to add pregnancy‑specific safety warnings to product labels;

• Marketed Tylenol as the “safe” pain reliever for pregnant women despite emerging evidence.

Because the MDL is on appeal, individual claims are still being evaluated, and no compensation framework exists yet. Anyone considering a case should watch the appellate outcome for guidance on future legal options.

This information is being provided for educational purposes only and is not medical or legal advice. Please consult with a healthcare provider or your legal representative for assistance.