World health officials reject Trump's claims that Tylenol is linked to autismtoggle caption Justin Sullivan/Getty ImagesHealth officials around the globe are rejecting President Trump's assertion that pregnant women should avoid taking acetaminophen, the active ingredient in Tylenol, during pregnancy because of unfounded links to autism. "Available evidence has found no link between the use of paracetamol during pregnancy and autism," the European Medicines Agency, Europe's top drug regulator, said in a statement. World Health Organization spokesperson Tarik Jašarević pushed back against that claim during a press briefing in Geneva. So this lack of replicability calls for caution in drawing causal conclusions about the role of acetaminophen in autism." President Trump also suggested on Monday that vaccines and their frequency were responsible for an increase in autism rates.