Has anyone heard of these pills?? I had a leaflet through the door the other day about these, and apparently they are "100% natural" and get rid of all the toxins that have built up in your body for years. They allow you to eat 'normally' and typical weight loss is up to 6lbs per week, depending on how much you have to lose. Sounds VERY tempting, but I'm always wary of these things. Anyone know anything about them??