I got my rx filled and there were two different pills. I take 30mgs I was told by the pharmacy that I got pills from two different manufacturers, they are large pills and then I also got the small ones. Anyway I noticed a difference in pain relief and side effects. I think they are using a similiar formula perdue used in the new oxycontin. I am having difficulty thinking I am not getting any pain relief I cannot even continue to give more detail right now due to the pain. Anyone have any input.