New York Pharmaceutical Litigation Attorneys

Tylenol (acetaminophen) is an over-the-counter drug used for pain relief and fever reduction. Despite being an easily accessible and commonly recommended drug, including for pregnant women, the medication has been subject to scientific scrutiny on account of a potentially increased risk of Autism Spectrum Disorder in children whose mothers took Tylenol often during pregnancy. These findings have spurred a number of lawsuits. In fact, a federal court just brought back over 500 Tylenol and Autism Spectrum Disorder related lawsuits, which had previously been dismissed.

What Studies Have Found Pertaining to Prenatal Tylenol Use and Autism Diagnosis

A John Hopkins longitudinal study tracked the development of a group of children from the fetal stage, to adulthood. Umbilical cord blood samples that showed the highest levels of acetaminophen also correlated strongly with rates of Autism Spectrum Disorder (ASD) among the group. In fact, the subjects with higher levels of the drug were found to be twice as likely to develop ASD. The significance of this research is further bolstered by similar studies conducted by Harvard University and Mount Sinai, with the former emphasizing their use of a gold-standard framework for synthesizing and evaluating environmental health data. The university found significant links between prenatal acetaminophen use and neurodevelopmental disorders.

The National Library of Medicine reports that maternal use of acetaminophen during pregnancy may relate to neurobehavioral problems in children, asserting that these findings should reasonably prompt caution and further study.

Texas Attorney General Alleges Corporate Cover-up

Texas Attorney General Ken Paxton is suing Johnson & Johnson, the makers of Tylenol, and Kenvue, another manufacturer of acetaminophen. He claims that the pharmaceutical giants intentionally suppressed evidence of the link between the drug and Autism.

The official website for the Texas Attorney General states:

“For decades, Johnson & Johnson willfully ignored and attempted to silence the science that prenatal and early-childhood exposure to their acetaminophen products can cause Autism and Attention-Deficit Hyperactivity Disorder (“ADHD”) in children. Despite being well aware of this fact, Tylenol was marketed as a completely safe pain medication for pregnant women, violating Texas’s consumer protection laws.”

Current Litigation Status

While President Trump’s September 2025 public conference on the issue generated increased awareness and public concern, the FDA was looking into the issue as early as 2015— with an archival page stating that the uncertainty surrounding acetaminophen’s prenatal effects should suggest caution. The FDA is now in the process of creating a label change for acetaminophen products, making users are aware of recent findings.

Since September 2022, over 500 lawsuits have been filed against Johnson & Johnson and Kenvue, two of the most prominent manufacturers of acetaminophen. These suits claim that the drug manufacturers failed to warn pregnant women of the latest research exploring the link between prenatal use of their product and the development of autism in children.

Do You Qualify for Legal Action?

In order to determine if you qualify for legal action, an experienced Tylenol Lawsuit Attorney should evaluate your family’s unique circumstances. First, your legal team must establish that you took Tylenol during pregnancy, particularly in the second or third trimester, and that your child has been diagnosed with ASD. Personal recordkeeping may be relevant in proving repeated exposure to acetaminophen products during pregnancy, and in particular, demonstrating the duration and extent of exposure. Prenatal records, pediatric records, diagnostic assessments, and medication history may help an attorney assess the facts.

If you believe that your family may qualify for legal action against drug manufacturers, such as Johnson & Johnson, the makers of Tylenol, Napoli Shkolnik offers free case evaluations to help you consider your options.

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