Wolfie45 is right to a point, it is made by the same company. I actually work for the company and most products are awesome when taken EXACTLY right. He probably gets a lot refunds just like we do here at the manufacturer, but I have seen every single product work to point. As for Zantrex, if your bodybuilding, skip it. To me the product is designed for a woman or man looking to lose weight, not get ripped. It has a fantastic energy booster, but it's fat burning qualities aren't too much more advanced than your ephedra products. The reason people lose more WEIGHT is because it also supresses the appetite like a mofo. So to answer your question, if your looking for an appetite suppressant with fat burning, and energy qualities, this product is unbelievable. If your looking to get ripped take NutraSport's ECA stack. Of all the fat burners on the market, this is better than anything else for a bodybuilder. If you got any more questions just e-mail my elitefitness account.