Had a patient last week who presented with multiple track marks and NO veins. I'm a pretty good stick, and couldn't even find a spider vein to get a 24 in. She claimed migraine, and also stated that "IM phenergan doesn't work for me." Said only thing that worked was IV Dilaudid and Phenergan. I've never run across a true instance of an IM med not working well when the IV form does...maybe takes longer, but still usually works. What is your experience?