This drug is not available in a generic form. The proton pump is the site within the stomach cell where hydrochloric acid is actually made and pumped out into the stomach. The drug is used for almost any condition where stomach acid is causing a problem or tissue injury. These include peptic ulcers in the stomach and duodenum and gastroesophageal reflux disease where acid splashes back into the food pipe causing injury. An uncommon disease, called Zollinger-Ellison Syndrome, results in the production of huge amounts of stomach acid because of uncontrolled stimulation of the stomach by a hormone called gastrin.
Severe ulcers can then occur.
Omeprazole is also used along with antibiotics to cure or eradicate a stomach infection caused by Helicobacter pylori. These bacteria have been shown to cause peptic ulcers. Finally, some physicians will use the drug for simple hyperacidity although the FDA has not approved it for this purpose. Follow your physician's instructions carefully. Omeprazole is usually taken once or twice a day before a meal.