You’ll need:

2 Quarts water

1 tsp. salt

½ Cup Sugar

1 Tsp. Baking soda

1 Packet Kool-Aid, Crystal Lite or Juicy Juice for flavoring

Capped container for fridge storage.

Instructions:

Combine ingredients in a container and shake until thoroughly mixed, as always consult your pediatrician before any course of action.

I can’t say that this is the way to go since Gatorade is akin to drinking soda, but some think you can replace brands like Pedialyte by diluting Gatorade 1:1 with water.  It is cheaper but as s always, discuss it with your pediatrician.