Pantonex DR-40, containing the active ingredient pantoprazole, is a medication used to treat gastroesophageal reflux disease (GERD) and other stomach acid-related disorders. It works by inhibiting the production of stomach acid, providing relief from symptoms such as heartburn and indigestion. Patients should take Pantonex DR-40 as directed by their healthcare provider and should not exceed the recommended dosage. It is crucial to inform your doctor about any other medications or medical conditions before starting treatment with pantoprazole.