Have you heard of Alli? You know alli is a new weight loss pill that promises to make you lose weight as quickly as physiologically possible. It was apparently just recently approved for over the counter purchase.
It is supposed to help your body absorb the nutrients it needs when those are lacking and ignore those nutrients when there is already enough in your body.
The side effects are not insignificant, so you should carefully consider if you really want to use alli as a last resort for losing weight.