I have tried them, and they definitely work. The one I ordered was the Extreme Fat Burner. I ordered it from Amazon and it arrived within a few days. I noticed that it gave me energy and suppressed my appetite. I lost 15 pounds within 3 weeks time - and my routine included eating healthy and exercising 20 minutes a day 3 times a week. I would recommend this product to any woman out there who wants to lose weight quickly!