If you take fish oil, a one-a-day, glucosamine and chondroitin, GNC's phyto-estrogen, protein shakes, weightgainers, Clenbutrex, or any of the other products provided by the multi-billion dollar supplement industry you should care about this.  Supplements are not regulated by the FDA.  If you look on the side of your supplement bottle, you will invariably find a little asterisk.  If you follow that little asterisk you will find this statement, "This statement has not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease".  This means that, at best, what you are taking will have no effect on your body, only on your bank balance.  At worst, you could be ingesting an unknown dosage of a most-likely-illegal, potentially-harmful, certainly-unregulated drug. 
 
Read this article and possibly rethink your next Jack3d purchase.  Remember, there is no secret.  Diet and exercise combined with almost anything will result in weight loss:-)