Lansoprazole is typically prescribed to treat gastric and duodenal ulcers, gastroesophageal reflux disease (GERD), and other disorders associated with excessive production of stomach acid. This includes erosive esophagitis and Zollinger-Ellison syndrome.
Lansoprazole may be prescribed in conjunction with antibiotics (such as amoxicillin) as a treatment for ulcers caused by an H. pylori bacterial infection.
Nonprescription lansoprazole is indicated for use as a treatment for heartburn and indigestion.
Lansoprazole is available over the counter under the brand name Prevacid, or generic lansoprazole.