Water + salts + glucose given orally in the correct ratio; you need water, sugar, sodium, and potassium for it to work. https://en.wikipedia.org/wiki/Oral_rehy

Water + salts + glucose given orally in the correct ratio; you need water, sugar, sodium, and potassium for it to work. https://en.wikipedia.org/wiki/Oral_rehydration_therapy https://en.wikipedia.org/wiki/Oral_rehydration_therapy