It contaisns water and mineral salts,they are the nornmal mineralized, have a lower solute concentration than that of blood plasma
Solute concentration is equal to that of blood plasma. Containing sugars and electrolytes, commercial drinks, besides water contain varying amounts of sodium chloride, potassium, small amounts of magnesium, calcium and simple sugars and starch. This composition helps to easily replenish water and other losses during exercise.
Solute concentration is above 10% than the one in the blood plasma. Composition: water, carbohydrates and electrolytes. Because of this feature, the body releases water until it becomes isotonic, that is, the same concentration as plasma has.