The problem he is having, he gets abdominal pain about 1/2hour to an hour after having either one of the above medications. Is this normal? Oxycontin dose is 10mg, Oxynorm dose is 5mg, he has been taking both medications for about 3 months now. The pain does go away soon after but he really doesn't like taking them even tho he knows he needs to. Can some one please give me some advise or there experience with these medications. Kind Regards concerned Son.