Changing may be a good idea, but look into it first. I would definately tell your doc and see what they say, but my understanding is that perc is available up to 10mg, the dose after that is 15 and that is roxicet, which is perc without tylenol(percocet) or asprin(percodan). Are you needing to go up? When I go up that is when I get the headaches,and they usually go away, but usually if I go back down. I do agree that it is a good idea to try the oxycodone "naked" :) to give the liver a break which is what I am going to talk to my p/m doc on 12/5. Good luck and isn't this board great?! Take care, Dawn