You might want to try glucosamine chondroitin which you can buy at the drug store in the vitamin section. It has helped me with tennis elbow and other joint pains. A fishing buddy of mine who does a lot of tournament fishing almost had to quit fishing because his tennis elbow got so bad. He started taking glucosamine chondroitin and his tennis elbow went away. The only down side is that it takes about one month of daily use before it works. I take 2 tablets per day. It might be worth a try.
