I participated in a dietary study on polyphenols last summer and we weren't supposed to use any NSAID's. I've used ibuprofen for years but during the high polyphenol portion of the study (6 weeks high polyphenols & 6 weeks low polyphenols) I had very little joint pain and less overall soreness. Since the study I've continued to try and get lots of polyphenols in my diet e.g. nuts, cloves, cinnamon, dark chocolate, berries, coffee.
I can't guarantee that it wasn't a placebo effect and my evidence is anecdotal but since I've increased them in my diet I've gone from 3-5 pills daily to about 1 per week. Here's a couple of links if anyone's interested:
http://www.nature.com/ejcn/journal/v64/n3s/fig_tab/ejcn2010221t1.htmlhttp://www.ncbi.nlm.nih.gov/pubmed/21432698
