Pedialyte: No 1 doctor recommended brand for hydration. 5 Key Electrolytes for: Fast rehydration. Muscle support. From the brand used by professional sports teams for decades. Rapidly rehydrate with advance science. Electrolyte level. Per litter Pedialyte sport. Sports drink, enhanced water, water. Electrolyte sodium in Pedialyte Sport compared to common beverages. Hydration for exercise: Before, after, during.