“Taking Tylenol is not good. It’s not good,” he claimed, adding that it is “very dangerous” for pregnant women. Scientists and doctors have long pushed back against claims that acetaminophen is in any way dangerous for women to take during pregnancy. The study found that there is statistically no association between the rise of autism or attention deficit/hyperactivity disorder — or ADHD — with mothers taking acetaminophen while pregnant. In response to questions about that statement, Mr. Trump simply said, “They’re the establishment.