I personally nearly fell victim to a potentially dangerous scam medical product a few months ago. I bought this in a desperate attempt to get relief from my symptoms:
http://www.fangocur.com/index_137_137__100000003441_2_0__.html
It was only weeks later when it arrived and I was about to try it I came across brand new information that it was potentially quite dangerous:
http://www.food.gov.uk/news/newsarchive/2009/jan/fangocur
It was my wife's idea to try the product, and I joked with her that I never thought my wife would try to feed me arsenic so early in our marriage.
We put it in the bin. It was a bit of a close call, so it reinforced to me I need to be careful trying any strange remedies.