Maintenance of adequate hydration:
Replacement after each diarrhoea:
Infants up to 1 year : 100 – 200ml
Children: 1 – 5 years : 200ml
(1cup) Older Children and adults:
Enough to replace the fluid lost and quench thirst.
 
In Patients unable to take usual feeds/meals:
Infants: Age 0-1 year : 120ml/kg per day.
              Age 1-2 years : 100ml per day.
              Age 2-4 years : 85ml/kg per day.
              Age 4-10 years : 70ml/kg per day.
Age over 10 years and adults: 2 – 3 litres per day.
 
Treatment of mild to moderate dehydtration:
50-100ml/kg body mass over the first 6 hours followed by maintenance therapy. It further fluid loss continues for 12 hours. And severe dehydration. Consult your healthcare professional immediately.