One of the large health organizations in our area publishes a fairly decent review of supplements and gives their recommendations on many different CAM (complementary/Alternative Medicine) approaches. Unfortunately they don't have a public web address that you can download the pdf from. If you want one you can PM me and I could send you a copy.

The good news is that NIH are beginning to do well-designed studies with heretofore poorly-studied alternative medicine techniques. I would start with their website at http://nccam.nih.gov/ They will let you know if there is any scientific evidence behind many of these ancient approaches.