Besides the other things mentioned here, Tylenol is seriously dangerous to your liver. It is very easy for people who get in the habit of popping lots of painkillers to do serious, fatal damage to their liver. Just ordinary people thinking it will help their aches and pains. I had an uncle who had liver damage and eventually died of it (in old age) from taking Tylenol too much.And why would such a harmful drug be allowed over the counter to the general public? Or even any proven harmful products? Who was it that said something like, "The government wants you dead and your kids sick/retarded. Once you realize that, all of their actions make perfect sense." (Completely paraphrased here from an old memory, was it a Sam Hyde quote?)
This risk is more widely known now than it used to be, but I bet many still don't know. It wasn't widely known for many decades after it came out. It's a wonder it was ever allowed OTC.