Dear Jo,
What a good friend you are. As far as I know Percocet contains both hydrocodone and tylenol (when you look at the prescription the first number is the amount of hydrocodone and the second is the tylenol i.e. 7.5mg/325). Roxicodone is just the hydrocodone. As you said, you need to make sure that this is the right info, but I just changed from Percocet to Roxicodone and so have done some research on this. Good luck to you all.