Adding a small amount of glucose and sodium (glucose being the more important factor) to the oral rehydration solution facilitates fluid uptake by the intestinal lumen because rapid glucose-sodium cotransport across the intestinal mucosa stimulates water's passive uptake by osmotic action.

Question

Quizplus · Accepted Answer

The presence of glucose enhances the absorption of sodium and water from the intestinal lumen into the cells by the glucose-sodium cotransport mechanism, which in turn increases the osmotic gradient, facilitating the passive absorption of water and improving hydration.

Adding a Small Amount of Glucose and Sodium (Glucose Being