Omeprazole (Prilosec) OTC
Omeprazole is a Proton Pump Inhibitor that treats heartburn, stomach ulcers, gastroesophageal reflux disease (GERD), and conditions that cause your stomach to make too much acid, such as Zollinger-Ellison syndrome, endocrine tumors, and other systemic diseases. Omeprazole also helps heal a damaged esophagus, and helps prevent stomach bleeding in patients who have a serious illness.