The Sterile Pantoprazole Sodium Injection is used to treat certain stomach and esophagus problems and works by decreasing the amount of acid in your stomach. It helps heal acid damage to the stomach and esophagus, helps prevent ulcers, and may help prevent cancer of the esophagus. The Sterile Pantoprazole Sodium Injection belongs to a class of drugs known as proton pump inhibitors (PPIs).The injection form of this drug is used for a short time when you cannot take the medication by mouth.