if u mean the "ripped fuel" I have used it a bunch. I have some of the older stuff (stocked up on bottles) with the ephedra in it, the new stuff is junk. It gives u the shakes and feels like u have had about 9 cups of coffee, but u sweat a ton, especially at night while u are sleeping, but thats what it does, it is a thermogenic fatburner. If this wasnt what u were talking about, I just wasted 69 seconds of my life, and Im not sure of what u are talking about.