Haha, so did they even look at the research that acetaminophen is pretty much ineffective for pain?
If a doc tried to give me IV tylenol, I'd be requesting a new doc. That stuff does nothing for me, except cause GI issues because it's a total COX inhibitor, instead of selective.
Even COX2 inhibitors are only marginally effective.
There's no way they can be as effective as opiods for pain, because of how they work (by reducing inflammation rather than blocking pain receptors).
Additionally, research is starting to show that reducing the inflammatory response has serious consequences - it's blocking the body from performing the very thing it needs at the moment to repair the injury.