Well, grain free, huh? My wife has celiac disease and of course for me most grains are full of phosphorus or potassium and having renal failure, I have to stay away from these foods. The "lack of" these foods has not decreased any pain. I go to bed with it and I wake up with it. I tried celebrex when it was new. It did nothing and I was put back on voltaran. I've tried aleve without help. My best so far is a controlled drug.
If you can get relief from celebrex, aleve, glucosamine chondroitin or a number of other arthritis drugs, then you're not really hurting yet. The controlled drug I take doesn't relieve my arthritis, it only makes the pain less severe, SOMETIMES!!!!!