Pantoprazole is a medication that belongs to a class of drugs known as proton pump inhibitors (PPIs). It works by reducing the amount of acid produced in the stomach, which helps treat conditions like gastroesophageal reflux disease (GERD) and stomach ulcers. By lowering stomach acid, it can alleviate symptoms such as heartburn and discomfort. This medication is typically taken orally, either as a tablet or an intravenous injection, depending on the patient's needs. Common side effects may include headache, diarrhea, and nausea. Long-term use should be monitored by a healthcare professional to avoid potential complications.