Please, can anyone answer this question for me? My doctor changed my medication two months ago from 80mg Oxys 3 times a day to 40mgs Opana ER 3 times a day. He said it was equal in strength, but I had problems taking it... it caused terrible cramping and headaches. Anyway, so last week when I saw him he changed me from the Opana ER to the 50mcg Duragesic Pain Patch, but he didn't know if it would be enough... and it isn't, but I would just like to know if anyone out there knows where I can find a conversion table for this medication... I looked and can't find one... Thanks!