There is a lady at the school who lost over 7 stone on it, a few years ago now, and she's not regained any of the weight. She has totally changed her routines though, and exercises as well. She took it with the right approach and knew that it was a quick weight loss, but to be bale to keep the weight off, major changes needed to take place.
She looks brilliant now, mind you she alwasy looked lovely bigger as well.
I tried it but the taste of the shakes/soups and bars is foul and i just couldnt swallow them. I lost 9 stone now using slimming world to start with and the last 3 stone have been with weight watchers. I find calorie control is more sustainable for me than, the idea of free foods, for some people the free food system can work, but for me my weight plateued at 15 stone and it didnt matter what i did i couldnt kick start a weight loss again, so i swapped to weight watchers and lost a further 4 stone. The weight watchers plan combined with using my fitness pal to keep track of what ive eaten and exercise means im not far from target now.