History and Usage: Growth Factor by Nutrabolics is the most potent amino acid supplement ever to be introduced. Growth Factor contains a precise, synergistic ratio of Esterified Branched Chain Amino Acids (E-BCAAs) and Esterified Essential Amino Acids (E-EAAs), which are clinically proven to be essential for building muscle size and strength. Growth Factor is the only product of it's kind that supports protein synthesis, nitrogen retention and most importantly, provides support for hard earned muscle from stress of heavy training and intense exercise. (These statements have not been evaluated by the Food and Drug Administration. This product Is not intended to diagnose, treat or prevent any disease.) Before beginning any program of weight management, consult your health care practitioner. Websites for Further Research:

http://www.fitness.gov/

http://www.cdc.gov/nccdphp/dnpa/physical/reco...

http://www.shapeup.org/