I had a partial subluxation of my shoulder , worse pain in my life bar none !! morphine did nothing for the pain , then they tried dilaudid which made NO dent what so ever, both made me throw up violently and they said it usually happens if you've never taken narcotics before , and then before they tried to put it back in they cracked out the good shit , fentanyl and that did not immediately work which kinda scared the shit out me because I was told it was a 100 times stronger than morphine

but it kicked in about 45 minutes later and the pain just subsided
My shoulder is still fucked and I would never want to see pain like that before , fuck that !!