MusclePharm Corporation is an American nutritional supplement company founded in 2010 and headquartered in Denver, Colorado. MusclePharm is sold in over 120 countries and available in over 45,000 global retail outlets, including GNC, Walmart, Sam's Club, Vitamin Shoppe, Walgreens, Costco, Bally, Dick's Sporting Goods, Fast Eddys, The Human Bean select 7-Eleven and Mobil stores and Smoothie King.