The general inventive concepts are directed to compositions and methods for the prevention and treatment of dehydration. Provided herein are nutritional compositions including oral rehydration compositions. Certain embodiments of the nutritional compositions have an acidic pH, and comprise a digestible carbohydrate, sodium, citrate, and an oligosaccharide selected from a fucosylated oligosaccharide and an N-acetylated oligosaccharide.
