Xenical is unlike some weight loss supplements that effect the brain or nervous system to suppress your appetite or speed up your metabolism. Xenical is a fat blocker and prevents the absorption of fat in your digestive system.
Xenical attaches itself to lipases (enzymes in the digestive system that help break down fat) and prevents them from breaking down some of the fat eaten. This fat is then digested and eliminated through normal bowel movements.
Xenical fat blocker enables 30% of the fat eaten in meal to pass through undigested.