There are many resources available to help you make better choices when it comes to choosing dietary supplements:
Regulatory Resources:
The Federal Trade Commission (FTC)
The Council for Responsible Nutrition (CRN) (leading trade association represents ingredient suppliers and manufacturers)
World Anti-Doping Agency (WADA)
The International Olympic Committee (IOC)
United States Anti-Doping Agency (USADA)
National Collegiate Athletic Association (NCAA)
National Association of Intercollegiate Athletics (NAIA)
The National Center for Drug Free Sport (DFS)