Gatorade is a brand of sports-themed food and beverage products, built around its signature product: a line of sports drinks. Gatorade is currently manufactured by PepsiCo and distributed in over 80 countries. The beverage was first developed in 1965 by researchers at the University of Florida, to replenish the combination of water, carbohydrates, and electrolytes that the school's student-athletes lost (in sweat) during rigorous athletic competitions. Its name was derived from the collective nickname of the university's athletic teams, the Gators. Originally produced and marketed by Stokely-Van Camp, the Gatorade brand was purchased by the Quaker Oats Company in 1983, who was bought out by PepsiCo in 2001. As of 2010, Gatorade is PepsiCo 4th-largest brand, on the basis of worldwide annual retail sales. It primarily competes with Coca-Cola's Powerade and Vitaminwater brands worldwide; plus, Lucozade Sport in the United Kingdom. Within the United States, Gatorade accounts for approximately 75 percent market share in the sports drink category.