Here is another rehydration formula. It is better because it includes potassium.

Dr. Orient's Recipe

One teaspoon of "Lite Salt"(by Morton, 1/2 iodized potassium chloride, 1/2 sodium chloride in a blue cylinder),
1/3 teaspoon of baking soda (sodium bicarbonate),
10 teaspoons of table sugar (sucrose),
and one quart of water.
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When in danger or in doubt
run in circles scream and shout
RAH

And always remember TANSTAAFL