Losing weight in a week is very difficult and even with the help of pills you might not be able to do it. Diet pills are essentially suppressants and they will kill your appetite. They are not healthy and you should not be opting for them. If you want to lose weight then there are several natural ways to do it. These are much more beneficial and healthy as well. Even if you work out every day and eat light food for a week then you will not be able to lose any significant amount of weight. You would probably require somewhere around three months to shed six kilos