How does alli work?

The active substance (orlistat) in alli is designed to target fat in your digestive system. It stops about a quarter of the fat in your meals from being absorbed. This fat will pass out of the body in your stools (see section 4). It is therefore important that you commit to a lower-fat diet to manage these effects. The action of the capsules will assist your efforts by helping you to lose more weight compared to dieting alone.