Modest Results. Studies conducted by the company show that when using the Alli program (pills, diet and exercise) correctly, individuals can lose up to 50% more weight than dieting alone. They compared the Alli program with dieting only (not with dieting AND exercising), so it's hard to say whether these results come from Alli, the exercise component, or a combination of both. While 50% more weight sounds like a lot—here's an example. If you used the Alli program, you could lose 15 pounds instead of 10 pounds in the same amount of time. These results aren’t that dramatic—especially since you have to diet and exercise for it to work. In another study, dieters using the Alli program only lost three more pounds over the course of an entire year than people who dieted and exercised without taking the pill.
[3 more pounds in a year? for the money to me it sounds pointless work a little harder and you can do that with out pills ]