Gatorade Endurance Formula is a specialized sports drink with a unique blend of five electrolytes designed to meet the fluid and electrolyte needs of elite and endurance athletes. Contains nearly twice the sodium (200 mg) and three times the potassium (90 mg) of Gatorade Thirst Quencher, as well as chloride, calcium and magnesium, to more fully replace what athletes lose during their longer and more intense occasions. Makes 5.5 gallons. This item is not able to be shipped international and is nonreturnable.