Is Orlistat effective for weight loss?

Is Orlistat medication effective for weight loss? It is, but it is difficult to use. So the way that Orlistat works is that it reduces the absorption of fat by 30% and that means that the fat goes into the stool. So if people have diets which are high in fat, it can cause diarrhea and that is unpleasant and it means that these people will not lose weight. The way that it works is that it forces people to reduce the amount of fat that they have in the diet so that they don't get diarrhea and then they will lose weight. The average weight loss after Olistat is about 2.5 kilograms. So it's a small amount. However, some people will lose a lot more. Some people will not lose any at all. That's why you have to try the medications for 12 weeks before we decide whether to continue or not.