Donald Trump used a White House press conference billed as revealing new findings on autism to insist that acetaminophen -- also known by the brand name Tylenol -- is unsafe to take during pregnancy.

The president and his deputies tied autism to acetaminophen use during pregnancy, presented a cancer drug as possible treatment and said the FDA would change labeling. There's little strong scientific evidence for either.

Families appealing the dismissal of their lawsuits alleging that Kenvue's Tylenol or generic versions of the pain-relief medication caused their children's autism are asking an appeals court to consider President Donald Trump's new advice that pregnant women avoid the pain killer as it decides whether to revive their lawsuits.

President Trump claimed Tylenol causes autism, but researchers say the evidence doesn’t support a causal relationship. Medical experts maintain acetaminophen is the safest pain medication for pregnant women, with alternative drugs carrying higher risks during pregnancy.

Trump and RFK Jr. have incorrectly tied autism to Tylenol usage in pregnancy, which some lawyers are hoping to use to update old lawsuits.

Trump announced that Tylenol could cause autism on Sept. 22, 2025, during a press conference at the White House. A Kenvue Inc. (the company that owns Tylenol) spokesperson confirmed that a snarky statement being shared in social posts was not the company's official response.

An injection of funding into genetic and environmental factors underlying autism was eclipsed by Trump’s controversial claims about acetaminophen.

President Donald Trump is set to speak today on how Tylenol may be linked to autism. Here's when, who makes Tylenol, and about the NJ company Kenvue.

The National Institutes of Health is investing $50 million into research on genetic and environmental factors underlying autism—news that was eclipsed by President Donald Trump’s recent controversial

Medical scholars say, efforts to find a singular cause for autism has historically led to scrutinizing parents and fueling stigma about autism