Pantoprazole sodium is a drug used in the treatment of gastroesophageal reflux disease and Zollinger-Ellison syndrome. The drug belongs to a class known as proton-pump inhibitors, which work by decreasing the amount of acid the stomach produces. Common side effects include fever, cold-like symptoms, and headache.Pantoprazole Sodium is a proton pump inhibitor that reduces the amount of acid that is produced in the stomach. This medication is used to treat certain esophagus and stomach problems such as acid reflux. It can also be used to treat Zollinger-Ellison syndrome, which involves excess stomach acid. This drug is used to relieve symptoms such as difficulty swallowing, heartburn, and persistent cough. Pantoprazole Sodium can also help prevent ulcers, heal acid damage to the esophagus and stomach, and may help prevent cancer of the esophagus. This drug works by decreasing the amount of acid that your stomach makes. However, do not use Pantoprazole Sodium to relieve immediate heartburn symptoms.