I currently take 4 60mg MS-Contin and 6 10/325mg endocet for chronic back pain. I have been on this dosage 3 1/2 years. I have been having to go to ER to get shots of Dilaudid up to 3 times a week due to unbearable pain that my meds are not controlling. The ER Doctor suggested I talk to my PM Doctor about changing me to Dilaudid and Oxycontin as it seems I have a tolerence to my current meds. What would be a correct dosage for the Dilaudid and Oxycontin?