Trump officials are expected to link the use of pain reliever Tylenol in pregnant women to autism, according to US media reports.

At an Oval Office event on Monday, the US president will reportedly advise pregnant women in the US to only take Tylenol, known as paracetamol elsewhere, to relieve high fevers.

At the Charlie Kirk memorial service on Sunday, Trump said he had an amazing announcement coming on autism, saying it was out of control but they might now have a reason why.

Some studies have shown a link between pregnant women taking Tylenol and autism, but these findings are inconsistent and do not prove the drug causes autism.

Tylenol is a popular brand of pain relief medication sold in the United States, Canada, and some other countries. Its active ingredient is acetaminophen, known as paracetamol outside North America.

Tylenol maker Kenvue has defended the use of the drug in pregnant women, asserting that independent, sound science shows taking acetaminophen does not cause autism, expressing deep concern for the potential health risks posed to expectant mothers.

The American College of Obstetrics and Gynecology has consistently identified Tylenol as a safe pain reliever for pregnant women, noting no clear evidence of a direct relationship between its prudent use and fetal developmental issues.

Autism diagnoses have seen a sharp increase since 2000, attributed in part to heightened awareness and evolving definitions of the disorder. Although hypotheses abound regarding potential causes, including environmental factors and the debated link to vaccines, experts caution against oversimplifying the complex nature of autism.