As far as this product goes...as soon as I can see the Double blind studies that show that Xango (or any other Mangosteen product) is better for you than Cranberry or Orange or Prune or Pomegranate juice, then we have something to discuss. Promotion via testimonial, "I have been taking this for 6 months and haven't had to take any pain pills..." is USELESS because of the Placebo effect.
There have been several studies with accupuncture as well. A full 50% of those undergoing real accupuncture got a reduction in chronic headaches. Of those receiving "fake" accupuncture (random needles, but administered as though with real knowledge), 50% reported a reduction in chronic headaches. I am pretty sure the same thing will be borne out here, but I am willing to wait for those double blind studies...