Trump and RFK Jr. announce federal autism actions: Tylenol label change and leucovorin
Why it matters
This is the moment the vaccine- and toxin-causation debate moved into official federal policy. A sitting president and HHS secretary, standing together, directed the FDA to act, the first time the government has formally tied a common exposure to autism and authorized a treatment.
On September 22, 2025, President Donald Trump and Health and Human Services Secretary Robert F. Kennedy Jr. announced a set of federal actions on autism from the White House.
The FDA is initiating a safety label change for acetaminophen (Tylenol), advising that its use during pregnancy may be associated with an increased risk of autism and that women limit use unless medically necessary. The agency is also updating the leucovorin label to authorize its use as a treatment for speech-related deficits in children with autism associated with cerebral folate deficiency.
The National Institutes of Health is launching confirmatory trials for leucovorin and a $50 million Autism Data Science Initiative to examine causes of the condition.
Mainstream medical bodies pushed back immediately, reaffirming that acetaminophen remains appropriate to treat fever and pain in pregnancy and that the evidence linking it to autism is contested. We read the announcement as long-overdue federal acknowledgment that autism has identifiable, and in many cases preventable, causes.
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