Used to treat conditions involving excess stomach acid such as gastroesophageal reflux disease (GERD), peptic ulcers, and Zollinger-Ellison syndrome. It helps reduce acid production in the stomach, relieving symptoms like heartburn and allowing damaged esophageal or stomach tissue to heal. Often prescribed for short-term use alongside lifestyle changes, it may also be used in combination with antibiotics to eradicate Helicobacter pylori, a bacterium linked to gastric ulcers. Available in oral formulations, it is taken before meals for optimal effect.