Nucynta
"I have three herniated discs in my lower back. I started taking Nucynta after I built up a tolerance of other pain killers (Codine, Hydrocodone, Oxycodone). If I take a whole pill, it puts me to sleep, the pain goes away but my face and neck itch, this can last 6 hours. I have found if I take half a pill, it takes the edge off the pain and there's no itching and I don't feel sleepy; I can work and even drive. I take these halves every 5 hours until I know the pain subsides.I'm on and off these pills; never had other side effects. I don't take them long enough (maybe 2-4 days) to get addicted."