GNC Holdings, Inc., together with its subsidiaries, operates as a specialty retailer of health, wellness, and performance products. The company operates through three segments: Retail, Franchise, and Manufacturing/Wholesale. Its products include vitamins, minerals, and herbal supplement products; and sports nutrition products, diet products, and other wellness products. The company sells its products under the GNC proprietary brands, including Mega Men, Ultra Mega, Total Lean, Pro Performance, Pro Performance AMP, Beyond Raw, GNC Puredge, GNC GenetixHD, and Herbal Plus, as well as under third-party brands. It operates a network of approximately 9,000 locations under the GNC brand worldwide. The company sells its products through company-owned retail stores; Websites, including GNC.com and LuckyVitamin.com, as well as Drugstore.com; domestic and international franchise activities; third-party contract manufacturing; and e-commerce and corporate partnerships. GNC Holdings, Inc. was founded in 1935 and is headquartered in Pittsburgh, Pennsylvania.