Who should take oral rehydration salts?

Oral rehydration salts should be used by anyone who has diarrhea or is vomiting. Oral rehydration salts can be used by infants, children, and adults, even women who are pregnant or breast-feeding. Oral rehydration may not be necessary for an adult because water often provides enough hydration for the body, but oral rehydration salts are still considered safe. Infants and smaller children should only receive the salts according to the direction of a doctor.