Tramadol
"Works okay for moderate pain. It does dry the mouth, eyes, etc. Can be habit forming. I have experienced the insomnia and hallucinations. However, puts me in a better mood and gives me energy.  I think I am losing weight, too.  I've been taking this for years on and off and I like it, but need something stronger for severe pain.  It works to take the edge off but as far as feeling free of pain nothing I've taken seems to work 100%.  My back is just a mess, though.  Narrowing spine, bone on bone rubbing, and calcified crack from years ago.  Tramadol is a lifesaver if you prefer something lighter than Oxycontin etc. I guess it's an individual preference."