I used Lipo-6 for about 2 months and was very impressed with this weight loss supplement. I took this supplement without any other weight loss products or stimulants. I started off with 2 pills a day and then moved it up to 4 pills a day a week later ( 2 capsules in the morning and 2 in the afternoon.) Right away I noticed an energy boost which helped increase my training intensity with cardio and with weight training. Unlike other products with stimulants, I didn't experience a severe drop off in my energy levels, in other words, I didn't crash. As for appetite supression this prodcut worked great. I found my self craving food less often and I wasn't eating as much in one serving. A couple days I forgot to take Lipo-6 and I was absolutely starving. I have tried other products with ephedra and Lipo-6 can definitely compare when it comes to energy increase, just without the feeling of your heart racing. The best thing about this product is, not one side effect! You can pick up a bottle of Lipo-6 on Bodybuilding.com for about $25, It's their #1 fat burner since 2005!