I have had great success with Alli. I started in mid-July, and had lost 45 pounds (41 from my official start day) while taking the pills. I have since stopped taking the pills for the past two weeks, and have lost another 4 pounds, bringing my total weight loss to 49 pounds, and so much closer to my goal (2 more pounds to my original goal, and 11 more to my revised goal, once I saw that it was actually possible). Alli is about retraining your eating habits and patterns. You simply cannot go back to your old habits once you stop the pill or you will gain the weight. I still track my calories and fat everyday with the nutrition tracker, and I have stepped up the exercise. If you stick with the plan, you will continue to lose weight after stopping Alli.
For the mathematically minded among us, the calculations are that Alli blocks ~100 calories per day if you're eating your recommended fat grams. We know that it takes approximately a 500 calorie per day deficit in order to lose one pound per week. If you simply stop taking Alli and don't change your new patterns, you should still have a calorie deficit (~400 calories/day - which is closer to 1 pound lost every 8 or 9 days).
Alli is not magic. We cannot simply use it to lose weight in the short term and expect to maintain if we don't change our habits. I could not be happier with the Alli program - they definitely try to ensure that people are committed to losing weight the proper way, and they provide support to help us along the way, but at the end of the day, it's up to us. For the first time in my adult life, I'm not overweight. I still have some pounds to go to get to where I'd like to be, but it is an amazing feeling to be in the "healthy weight' category.
Best of luck to all of you, and I really encourage you all to stick with the plan, even if you don't stick with the pills. It works.
--beautyredefined
SW: Officially 181, had seen up to 185 though. July 2007
CW: 132
GW: Originally it had been 134, set many years ago when I never thought it was a feasible goal. I've hit that and am floundering a bit trying to get to my new goal of 125 which would be a BMI of 22.