The top legal official in Texas Ken Paxton is suing the manufacturers of acetaminophen, asserting the firms withheld potential risks that the pain reliever posed to pediatric neurological development.
The court filing comes a month after President Donald Trump publicized an unproven link between using Tylenol - also known as acetaminophen - throughout gestation and autism in children.
Paxton is filing suit against J&J, which formerly manufactured the medication, the only pain reliever suggested for pregnant women, and Kenvue, which presently makes it.
In a statement, he stated they "betrayed America by making money from suffering and pushing pills without regard for the risks."
The company states there is insufficient reliable data tying acetaminophen to autism.
"These corporations misled for generations, intentionally threatening numerous people to increase profits," Paxton, from the Republican party, said.
The manufacturer said in a statement that it was "deeply concerned by the perpetuation of misinformation on the security of acetaminophen and the possible consequences that could have on the health of women and children in America."
On its official site, Kenvue also said it had "regularly reviewed the applicable studies and there is no credible data that indicates a established connection between taking acetaminophen and autism spectrum disorder."
Associations representing medical professionals and medical practitioners agree.
The leading OB-GYN organization has declared acetaminophen - the key substance in Tylenol - is a restricted selection for women during pregnancy to treat discomfort and elevated temperature, which can present major wellness concerns if ignored.
"In over twenty years of investigation on the use of paracetamol in gestation, not a single reputable study has successfully concluded that the usage of acetaminophen in any trimester of gestation causes brain development issues in young ones," the organization stated.
The court filing mentions current declarations from the former administration in arguing the drug is potentially dangerous.
Last month, the former president raised alarms from public health officials when he instructed women during pregnancy to "resist strongly" not to take acetaminophen when ill.
The US Food and Drug Administration then published an announcement that doctors should think about restricting the use of acetaminophen, while also mentioning that "a causal relationship" between the medication and autism spectrum disorder in children has remains unverified.
Health Secretary Kennedy, who oversees the Food and Drug Administration, had promised in April to initiate "comprehensive study program" that would identify the origin of autism in a limited time.
But experts advised that finding a unique factor of autism spectrum disorder - believed by scientists to be the outcome of a complex mix of genetic and surrounding conditions - would prove challenging.
Autism is a form of lifelong neurodivergence and condition that impacts how individuals experience and engage with the world, and is recognized using medical professional evaluations.
In his court filing, the attorney general - a Trump ally who is running for US Senate - asserts the manufacturer and Johnson & Johnson "willfully ignored and sought to suppress the science" around paracetamol and autism spectrum disorder.
This legal action seeks to make the companies "eliminate any promotional materials" that states Tylenol is reliable for pregnant women.
The court case parallels the concerns of a assembly of mothers and fathers of children with autism spectrum disorder and attention deficit hyperactivity disorder who filed suit against the manufacturers of Tylenol in recently.
Judicial authorities rejected the lawsuit, saying studies from the parents' expert witnesses was lacking definitive proof.
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