I have 15 herniated discs with bone spurs and several complications along with degenerative disc disease and a tumor wrapping around my mid spine, not cancerous. I have been on every pain med imaginable and have built up quite a tolerance. I am currently on 100mg of morphine sulphate 2 times a day. This works but so, so. I am building up immunity to this too. I feel I need to switch my meds back and forth because of the tolerance issue. From what I have heard, Demerol sound fantastic and I would love to try it to see if it would work for a little while. I don't know if they still prescribe for chronic pain though. I did have a shot of it while in labor, 48 hour labor!!! I remember it relaxing me between contractions but still feeling some pain.