GNC is a leading global specialty retailer of health and wellness products that takes pride to be the world's largest company of its kind devoted exclusively to help its customers improve the quality of their lives. Headquartered in Pittsburgh, US, and with over 9,000 locations in approximately 50 countries, GNC sets the standard in the nutritional supplement industry by demanding truth in labeling, Ingredient safety and Product potency, all while remaining on the cutting-edge of nutritional science.