Dumping Syndrome

Rapid gastric emptying, or dumping syndrome, happens when the lower end of the small intestine fills too quickly with undigested food from the stomach. "Early" dumping begins during or right after a meal. "Late" dumping happens 1 to 3 hours after eating. Many people have both types.


  • Certain types of stomach surgery that allow the stomach to empty rapidly are the main cause of dumping syndrome.

  • Patients with Zollinger-Ellison syndrome may also have dumping syndrome. Zollinger-Ellison syndrome is a rare disorder involving extreme peptic ulcer disease and gastrin-secreting tumors in the pancreas.


Early dumping

  • Nausea.

  • Bloating.

  • Dizziness.

  • Vomiting.

  • Cramping.

  • Diarrhea.

  • Fatigue.

Late dumping

  • Low blood sugar (hypoglycemia).

  • Weakness.

  • Sweating.

  • Dizziness.


Doctors diagnose dumping syndrome primarily on the basis of symptoms in patients who have had gastric surgery that causes the syndrome. Tests may be needed to exclude other conditions that have similar symptoms.


  • Treatment includes changes in eating habits and medicine.

  • People who have dumping syndrome need to eat several small meals a day that are low in carbohydrates and should drink liquids between meals, not with them.

  • People with severe cases may be prescribed medicine to slow their digestion.

  • Caregivers may at times recommend surgery to help correct the problem.