Sibutramine is an appetite suppressants. The way our brains work is that it receive inputs from the stomach to know whether it is full or not. If a medication can fool the brain by sending messages that it is full, we will feel full even though we ate just a small amount of food. This helps us to consume calorie deficit and our body will need to burn the reserve which is fat. However if the cutting of calorie is too severe it will cause the starvation effect. You can buy sibutramine online from a recognized pharmacy here.