This has been discussed in Stateside forums and the overwhelming opinion is that it is a scam. Two very strong indicators of whether a book, remedy or supplement may be a scam are:
1. A search for user "reviews" of the product will turn up dozens, perhaps hundreds, of glowing, positive reviews that have obviously been "seeded" (planted or posted by employees or agents of the product manufacturer). Virtually all of the reviews will include a link to a site where the product can be purchased (what objective reviewer includes advertising/promotional links?).
2. Many of these scams use a company or website known as "ClickBank" as the "retailer." It does not necessarily mean that ClickBank itself is the perpetrator of the scam, just the vector for securing payment from anyone dumb enough to swallow the claims of the vendor hook, line, sinker and perhaps, even the fishing pole.
Save your money. The only benefit this scam will provide is a little weight loss. Unfortunately, it will all be concentrated on the weight of your pocketbook and not your body.