What are the negative consequences of taking tylenol (acetaminophen) pm to help me get to sleep at night?

Not bad, but.... I always like to know why you can't get to sleep normally. The tylenol (acetaminophen) pm isn't particularly bad, but it is not good either. If there is a specific reason you need it for a short period of time like a change of schedule or something that you just need to get through, then go ahead, but don't plan on continuing indefinitely.