I don't know alot about TOS but I do about narcotics. I had spinal fusions and take them. I would not wish this for anyone. Use only as a last resort, after trying all the other wonderful sugestions. I would give anything not to have to take this medication. If you forget to take your medication, there is withdrawl. If you have to have another surgery, there are questions in the hospital, and sometimes doctors don't communicate effectively about pain meds. I didn't get enough of a medication after my spinal fusion, because I had built up a tolerence. I do wish you all the best and I hope you don't have to take them. ginnie