Very effective. I ate two servings in 2009, ranging from118kg to104kg, and it hasn't rebounded yet. It takes perseverance to lose weight. When I first started eating, I was full of confidence and had control over the food. For example, eat a boiled egg or oatmeal for breakfast, eat a capsule half an hour before lunch, then cook some tofu, Flammulina velutipes, kelp and Chinese cabbage with white water, or eat one or two Wei Wei chewed with soy isoflavones and eat some fruit for dinner. This lasted for two months, and finally I lost weight. Best of all, I didn't rebound. It is difficult to lose weight, and persistence is victory.