Used to treat conditions involving excess stomach acid such as gastroesophageal reflux disease (GERD), peptic ulcer disease, and Zollinger-Ellison syndrome. It works by reducing the amount of acid produced in the stomach, helping to relieve symptoms like heartburn and acid regurgitation. Also used in combination with antibiotics to eradicate Helicobacter pylori, a bacterium linked to stomach ulcers. Provides long-lasting acid suppression, allowing healing of esophageal and gastric tissues. Commonly prescribed for short-term and maintenance therapy in patients with acid-related disorders.