Gatorade Endurance is an elite line of sports nutrition products for endurance athletes who have specific fueling needs and performance goals. The products vary in the amount and type of nutrients they contain and the functional packaging in which they are delivered. Including a five-electrolyte blend which includes sodium, potassium, calcium, magnesium and chloride, Gatorade Endurance Formula is a specialized sports drink designed to provide hydration during prolonged training and racing when fluid and electrolyte losses can be significant.