Used primarily to reduce stomach acid production, this compound is widely applied in the treatment of gastrointestinal conditions such as peptic ulcers, gastroesophageal reflux disease (GERD), and Zollinger-Ellison syndrome. It helps heal ulcers by decreasing acid secretion, providing relief from heartburn and acid indigestion. Also used in short-term management of erosive esophagitis and prevention of stress ulcers in critically ill patients. Its action as an H2 receptor antagonist makes it effective in both outpatient and hospital settings for acid-related disorders.