Acid- or proton-pump inhibitor; gastric antisecretory agent. 1 3 5 19 34 S-isomer of omeprazole. 1 5 9 34 Uses for Esomeprazole Magnesium Gastroesophageal Reflux Short-term treatment of symptomatic GERD in patients without erosive esophagitis. 1 Pantoprazole, first sold under the brand name...