I agree with ConsiderThis....vitamins can help with the fatigue and pain. I take a very good multi-v made for people with FM, which has the extra B along with Malic Acid and other minerals that specialists seems to want us to take and I feel much better when I do take it. I know when I don't and feel sluggish and I seem to have more pain. I am also anemic so I have to take an extra 27mg of Iron. Now when I don't take that I know it!
I have been down the road of pain killers and not a one did me any good. Oh they did at first but eventually they crapped out and I was going higher and higher in doses.
Now I take Robaxin 4 times a day, which is a muscle relaxant and it helps me quite a bit. I am also on 6 other meds for my other issues and they help too. I know I will be taking these meds for the foreseeable future and have accepted it.
I think you need to find another path to control your pain, be it the supplement route or another type of med.
Good luck to you.