Omeprazole is a specific inhibitor of the gastric proton pump (H+/K+ ATPase) in the parietal cell. It inhibits acid secretion by binding to the H+/K+ ATPase enzyme.
Omeprazole is used to treat symptoms of gastroesophageal reflux disease (GERD) and other conditions caused by excess stomach acid. It is also used to promote healing of erosive esophagitis (damage to your esophagus caused by stomach acid).
Omeprazole may also be given together with antibiotics to treat gastric ulcer caused by infection with Helicobacter pylori (H. pylori).
Capsule : 20 & 40 mg
Injection : 40 mg IV