what is the difference between dilaudi, iv medication that you get in you iv for pain at hospital and percocet. ive had to get a shot for pain, many times, like today due to running nearly out of my medication. and its been about hour and a half since then and i took my percocet, the dr said its safe cause its different medications, from different familys and work differently. but still , since i suffer panic/anxiety the lies are starting and the voice im hearing is driving me bonkers, also in the mean time till my appt tomorrow for my percocet refill and evaluation and possible reduction on my taper, my dr called me in some vicoden extra stength to hold me over since i will end up with bad withdrawls, whats the difference between oxycodone and hydrocodone, thanks anyone for your input