Used to treat conditions involving excess stomach acid such as gastroesophageal reflux disease (GERD), peptic ulcer disease, and Zollinger-Ellison syndrome. It helps reduce acid production in the stomach, relieving symptoms like heartburn and acid regurgitation. Often prescribed for short-term healing of erosive esophagitis and long-term management of chronic acid-related disorders. May be combined with antibiotics to eradicate Helicobacter pylori infection, a common cause of gastric ulcers. Taken orally, usually before meals, it provides sustained acid suppression throughout the day.