Gatorade Endurance Formula is scientifically formulated to meet the needs of endurance athletes.  It contains a five-electrolyte blend including nearly twice the sodium (200 mg) and more than three times the potassium (90 mg) compared to original Gatorade Thirst Quencher. Drink Gatorade Endurance Formula to help sustain hydration, maintain proper fluid balance and help replace key electrolytes lost in sweat during long distance training and racing.