Omeprazole.
D000126:Achlorhydria / Q000139:chemically induced; D000818:Animals; D004381:Duodenal Ulcer / Q000188:drug therapy; D006801:Humans; D009853:Omeprazole / Q000009:adverse effects / Q000627:therapeutic use*; D051381:Rats; D015043:Zollinger-Ellison Syndrome / Q000188:drug therapy
D009853:Omeprazole