Pantoprazole (Protonix) is a proton-pump inhibitor (PPI). It's used to treat symptoms of gastroesophageal reflux disease (GERD) in adults and children. It's also used to treat other conditions involving too much stomach acid, such as erosive esophagitis, in adults only. Protonix (Pantoprazole) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. Pantoprazole is used to treat certain conditions in which there is too much acid in the stomach. It is used to treat erosive esophagitis or heartburn caused by gastroesophageal reflux disease (GERD), a condition where the acid in the stomach washes back up into the esophagus. Because PROTONIX was not shown to be effective in the randomized, placebo-controlled study in this age group, the use of PROTONIX for treatment of symptomatic GERD in infants less than 1 year of age is not indicated. Find patient medical information for Pantoprazole (Protonix) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Protonix is a proton pump inhibitor that decreases the amount of acid produced in the stomach. Protonix is used to treat erosive esophagitis (damage to the esophagus from stomach acid caused by gastroesophageal reflux disease, or GERD) in adults and children who are at least 5 years old. Pantoprazole (Protonix) is a medication that treats conditions that cause too much stomach acid, like heartburn, stomach ulcers and reflux disease. Pantoprazole is a proton pump inhibitor that decreases the amount of acid produced in the stomach. Pantoprazole is used to treat erosive esophagitis (damage to the esophagus from stomach acid caused by gastroesophageal reflux disease, or GERD) in adults and children who are at least 5 years old. Pantoprazole, brand name Protonix, is a drug that belongs to the class of drugs called proton pump inhibitors (PPIs). Protonix is used for the treatment of GERD (gastroesophageal reflux disease), stomach (peptic) and duodenum ulcers, and Zollinger-Ellison syndrome. Pantoprazole, sold under the brand name Protonix, among others, is a medication used for the treatment of stomach ulcers, short-term treatment of erosive esophagitis due to gastroesophageal reflux disease (GERD), maintenance of healing of erosive esophagitis, and pathological hypersecretory conditions including Zollinger–Ellison syndrome. [7.