Esomeprazole Magnesium delayed-release capsules are a proton pump inhibitor indicated for treatment of gastroesophageal reflux disease (GERD), risk reduction of nonsteroidal anti-inflammatory drug (NSAID)-associated gastric ulcer, and pathological hypersecretory conditions, including Zollinger-Ellison Syndrome. Esomeprazole magnesium is available in generic form.