Well, I didn't want to say for a fact because I can't remember for sure, but it seems like my step dad (who lays carpet for a living) asked a doc. about it because of tennis elbow, and the doc. confirmed. He tried it for a couple of weeks and it seemed to help. He stopped because he couldn't stand the taste...
I hate to say, because I personally cannot say for sure, that's why I try to stress the point. But I think it's worth looking into, if I had the problems (give me a couple more years) I'd look into it more.
If you decide to try it, and I hope it works for you, let us know and good luck!
Just remember, it has to be 100% pure cherry juice...diluted cherry juice will not work...