What is Xenical, how does it work, and how effective is it in reducing weight?
Xenical is the brand name for the product orlistat, which is a fat blocker. And until recently it was available only by prescription. What it does is it blocks about 30 percent of the fat calories in the diet, it prevents about 30 percent of the fat from being absorbed, so it passes through the system undigested. And it can be modestly helpful as an aid to weight loss.
