I just started on these meds a few weeks ago, was changed from exalgo and dilaudid for break thru. The patches and 7.5/325 percocet have worked ALOT better than the exalgo !! The only problem that has come up is all the aspirin in the percocet. I was wondering if anyone knew of something that is compatible with the perocet without all the aspirin. I am some what allergic to the aspirin, Hives and BAD stomach problems, even with eating something before taking the percocets. Any help is greatly appricated.