Oral versus intravenous rehydration of moderately dehydrated children

Researchers at a pediatric emergency department randomly assigned 73 moderately dehydrated children to either oral rehydration solution or IV fluids.

At the 4-hour mark, success rates were identical, 50% in both groups, meaning IV fluids offered no rehydration advantage over drinking for these children.

Oral therapy started in about 20 minutes versus roughly 41 minutes for an IV, and fewer children in the oral group were hospitalized.

The study was small and single-center. It is frequently cited as evidence that IV fluids belong where drinking is not an option, which is also the honest frame for at-home IV care: speed, convenience, and clinical delivery rather than a superpower over water.