Well the post above with the arms is a little exaggerated, but since there are so many unwanted fillers and not to mention the APAP (which is terrible) in percs I would suggest against it. Also oxy doesnt give much of a rush IV and the bioavialability really doesnt increase at all compared to oral. If you want a rush find some hydromorphone, oxymorphone, heroin, morphine, and even methadone. Yes methadone gives a great rush if you shoot it, but I only suggest this if you get the right form.