Walk into the locker room of a professional sports team, and you may find the athletes acting like babies -- or drinking like babies anyway. Pedialyte -- a liquid often recommended for babies and children to replace fluid and electrolytes after a bout with the stomach flu -- has become popular with professional athletes for its ability to rehydrate quickly. With nearly twice the sodium of Gatorade and half the sugar, Pedialyte has apparently been popular with extreme athletes for some time and is now catching on with professional and amateur athletes alike.

Gatorade refuses to believe Pedialyte is a better product for sports enthusiasts and says it doesn't contain near enough of the right amount of sugars to fuel muscle. They have responded, however, by putting out Gatorade Endurance, which has more sodium and fewer calories. Health experts say that either drink should be safe for athletes to use, as long as they're healthy with good functioning kidneys, but if it were me, I'd check with my doctor first.

Source