Omeprazole.
D002986:Clinical Trials as Topic; D004381:Duodenal Ulcer / Q000188:drug therapy*; D004942:Esophagitis, Peptic / Q000188:drug therapy; D005744:Gastric Acid / Q000378:metabolism; D006801:Humans; D009853:Omeprazole / Q000627:therapeutic use*; D013276:Stomach Ulcer / Q000188:drug therapy*; D015043:Zollinger-Ellison Syndrome / Q000188:drug therapy
D009853:Omeprazole