Proton pump inhibitors (PPIs) are a class of drugs that are vital in managing conditions related to excess stomach acid production. They work by blocking the acid-producing proton pumps in the stomach lining, effectively reducing acid secretion. PPIs are widely used to treat gastroesophageal reflux disease (GERD), peptic ulcers, and Zollinger-Ellison syndrome. By reducing stomach acid, they help alleviate symptoms like heartburn and discomfort, promoting healing of the esophagus and stomach lining. PPIs are an essential tool in managing acid-related gastrointestinal conditions and improving patients' quality of life.