My idea about weight loss is: if you didn't take a pill to become overweight, don't use one to try to lose weight.  I personally wouldn't even trust the FDA - after all, they approved aspartame.  Aside from that, maintaining a healthy body fat percentage is all about spending time eating right and exercising. The body needs to adjust to being healthy, so just start small:  get out & walk if nothing else.

Your link attaches the word "some" onto the URL so it doesn't quite work right, but my reaction to the description is that I am wary of it.  "It speeds the removal of glucose from the bloodstream, at least partly by enhancing insulin function..."  I'm of the opinion that messing with insulin levels should be a last-resort (like if you have diabetes) kind of plan.  

Anyway, take this as you will, but I remain skeptical.