If you are on that diet of course you want the best weight loss supplements that are on the market. You want something that will actually work. Losing weight takes time though so you should not get discouraged if it takes up to a year to lose your 40 pounds. You should only be losing 5 pounds a month in my opinion. Losing too much too fast will really do a number on your systems. You body is not meant to lose weight that quickly. Just be sure to eat right and exercise and you will be sure to keep it off once you lose it!