Scientists and clinicians are cautioning the public not to mix two widely used over-the-counter medicines, warning that pairing them can put unnecessary strain on the body. Their appeal comes shortly after Donald Trump and Robert F Kennedy Jr made headlines with remarks about Tylenol and autism, a claim that experts have repeatedly dismissed.The current concern is different. Physicians are asking people to avoid taking Tylenol and NyQuil together, even though they are sold for separate purposes. Tylenol is meant for general pain and fever, while NyQuil is marketed to ease cold and flu symptoms at night. Both contain acetaminophen, which means the doses can add up more quickly than people realize.Tylenol Warning: Why Doctors Are Urging CautionDr Brynna Connor told Parade that many adults unintentionally take far more than the recommended daily amount. She explained that four thousand milligrams is the absolute upper limit for healthy adults, but she encourages most patients to stay well below three thousand. Going beyond that threshold, even briefly, can damage the liver. According to her, people often double up on acetaminophen without recognizing how fast it can lead to liver failure.As per Healthline, the body can process acetaminophen safely, but only within a defined range. Exceeding it places stress on the liver, especially when multiple medications contain the same ingredient.Dr Parth Bhavsar added that combining NyQuil with Benadryl can also lead to trouble. Both products include diphenhydramine, which may cause heavy drowsiness, slower breathing, confusion, dizziness, or difficulty urinating when taken together. He noted that these combinations can increase the risk of falls or memory lapses.Tylenol And Autism Claims by President Trump and RFK JrThe advisories come months after Donald Trump and Robert F Kennedy Jr held a joint media briefing in which they suggested that Tylenol use during pregnancy might raise the likelihood of autism in newborns. Their statements drew widespread criticism from experts.During the briefing, Trump struggled to pronounce “acetaminophen” and claimed the drug posed a “very increased risk of autism,” a statement that has not been supported by scientific research. A new analysis by researchers in the United Kingdom, Spain, and Australia reviewed nine major summaries of existing studies, including work Trump had referenced. Their conclusion was that there is no clear evidence linking paracetamol use in pregnancy to autism or ADHD.The group also pointed out that many reviews had gaps in their methods or did not fully adjust for genetic and environmental factors. When those variables were accounted for, the suggested connection between Tylenol and autism weakened or disappeared.What Is Acetaminophen?Acetaminophen, known in many places as paracetamol and sold under names such as Tylenol and Panadol, is a common non-prescription medicine used to reduce fever and ease mild to moderate pain. It works as an analgesic and a fever reducer. It is different from drugs like ibuprofen because it does not address inflammation. As per the Food and Drug Administration.What Major Medical Groups SayThe American College of Obstetricians and Gynecologists responded to the findings, saying the results were consistent with what the organization has long maintained. According to a spokesperson, available research does not show a causal link between responsible acetaminophen use in pregnancy and autism or other developmental conditions. In other words, the organization does not see enough evidence to support claims made by Trump or Kennedy.