The top legal official in Texas Paxton is suing the makers of Tylenol, alleging the companies withheld potential risks that the drug created to pediatric cognitive development.
This legal action comes four weeks after Former President Trump publicized an unverified association between taking acetaminophen - referred to as paracetamol - while pregnant and autism in children.
The attorney general is suing the pharmaceutical giant, which once produced the medication, the sole analgesic approved for expectant mothers, and Kenvue, which presently makes it.
In a declaration, he said they "misled consumers by making money from discomfort and marketing drugs without regard for the risks."
The manufacturer says there is lacking scientific proof connecting Tylenol to autism spectrum disorder.
"These manufacturers lied for decades, deliberately risking numerous people to line their pockets," Paxton, a Republican, stated.
The company said in a statement that it was "very worried by the spread of false claims on the reliability of acetaminophen and the potential impact that could have on the well-being of women and children in America."
On its official site, the company also said it had "continuously evaluated the relevant science and there is no credible data that demonstrates a verified association between consuming acetaminophen and autism spectrum disorder."
Organizations representing medical professionals and healthcare providers agree.
ACOG has said acetaminophen - the key substance in acetaminophen - is one of the few options for women during pregnancy to address discomfort and fever, which can create significant medical dangers if left untreated.
"In over twenty years of investigation on the use of acetaminophen in pregnancy, zero credible investigations has conclusively proven that the use of acetaminophen in any stage of pregnancy leads to neurological conditions in young ones," the association stated.
The lawsuit cites recent announcements from the Trump administration in arguing the drug is allegedly unsafe.
Recently, Trump generated worry from health experts when he told pregnant women to "fight like hell" not to take acetaminophen when ill.
The US Food and Drug Administration then issued a notice that medical professionals should contemplate reducing the consumption of acetaminophen, while also mentioning that "a direct connection" between the medication and autism in children has not been proven.
Health Secretary Robert F Kennedy Jr, who supervises the Food and Drug Administration, had promised in spring to conduct "a massive testing and research effort" that would determine the origin of autism in a matter of months.
But specialists warned that identifying a sole reason of autism - believed by scientists to be the result of a complicated interplay of genetic and external influences - would prove challenging.
Autism is a category of permanent neurological difference and impairment that impacts how people experience and engage with the environment, and is identified using medical professional evaluations.
In his lawsuit, the attorney general - aligned with the former president who is seeking the Senate - asserts Kenvue and Johnson & Johnson "willfully ignored and tried to quiet the research" around paracetamol and autism spectrum disorder.
This legal action attempts to require the corporations "remove any promotional materials" that asserts acetaminophen is secure for pregnant women.
The court case echoes the concerns of a group of guardians of young ones with autism and ADHD who took legal action against the producers of Tylenol in two years ago.
A federal judge rejected the legal action, saying research from the parents' expert witnesses was lacking definitive proof.
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