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Pantoprazole is a proton pump inhibitor drug that inhibits gastric acid secretion. It works on gastric parietal cells to irreversibly inhibit (H+/K+)-ATPase function and suppress the production of gastric acid. It was first sold in 1994 in Germany and became avaliable as a generic medication in 2010.
Pantoprazole and Omeprazole are two drugs coming under the drug class category of proton pump inhibitors. Proton pumps are situated in mitochondrial membranes, which mean they are in almost all cells. The importance of these drugs is that they selectively inhibit proton pumps in the stomach lining.