Pantoprazole injection is used to treat certain conditions in which there is too much acid in the stomach. It is used for short-term treatment (7 to 10 days) of gastroesophageal reflux disease (GERD) with a history of erosive esophagitis. GERD is a condition in which the acid in the stomach washes back up into the esophagus. This medicine may also be used to treat Zollinger-Ellison syndrome or other conditions (eg, cancer) in which the stomach produces too much acid.