I had a car accident 18 years ago resulting in back surgery and fusion of T10, 11 and 12. Unfortunately, it did not correct the problem and I have been on various pain medicines since then. My current pain med doctor is prescribing the aforementioned oxycodone, but the medication is almost to the point it stops working after a couple hours. I have to see him later today for my monthly appointment Any suggestions on what medication I should inquire about ?