It is used to treat,

Gastro-esophageal reflux disease (GERD) in which acid from the stomach escapes into the gullet (the tube which connects your throat to your stomach) causing pain, inflammation and heartburn
Ulcers in the stomach or upper part of the gut (intestine) that are infected with bacteria called Helicobacter pylori

GASTRIC (STOMACH PAIN) HEART BURN AND ULCER,ESOMEPRAZOLE