Advice from a pediatrician and mom
The well-behaved bellies in healthy kids normally allow fluid, minerals, and other nutrients to flow in and out of their intestine, hydrating their bodies. But when diarrhea and vomiting hit, the stomach and intestines become inflamed and don't act the way they should to absorb fluids like normal. This bad behavior can lead to dehydration. Bacteria within the digestive system may be out of balance as well.
Unlike sugary household beverages like sports drinks, juice, and soda, which can make diarrhea even worse, Pedialyte helps replenish what kids lose during diarrhea and vomiting.