I was prescribed hydromorphone when I blew out my back, years ago. Holy Christ, I don't know how people get hooked on that stuff. Literally knocked me out within minutes of taking it.
Spent pretty much two days, sleeping, only getting up to pee, barely eating before I told my wife I was done taking them and I'd just deal with the pain.
Found out after I tossed them in the garbage I could have gotten $5-$10 a pill on the street. lol