Used to treat gastroesophageal reflux disease (GERD), peptic ulcer disease, and Zollinger-Ellison syndrome by reducing stomach acid production. It is effective in healing erosive esophagitis and preventing NSAID-induced gastric ulcers. Often prescribed for short-term and long-term management of acid-related disorders. Administered orally or intravenously in clinical settings. Provides faster and more consistent acid control compared to older proton pump inhibitors.