RESUMEN
BACKGROUND/AIMS: The aim of this study was to ascertain the effects of two week treatment of omeprazole (O) and clarithromycin (C) with and without metronidazole (M), and one week treatment of omeprazole, clarithromycin and metronidazole, for the eradieation of Helicobacter pylori (H. pylori) in patients with peptic ulcer disease in double-blind, randomly controlled groups. METHODS: The H. pylori infection determined in patients whose results were positive in a rapid urease test or in those who exhibited histology in antrum and body, The OC14 group received O 40 mg qd and C 500 mg t.i.d. for 2 weeks; the OCM14 group received O, C, and M 250 mg t.i.d for 2 weeks, and the OCM7 group received O, C, M for 1 week, respectively. H. pylori eradication was assessed 4 weeks after the end of treatment. The H. pylori eradication was determined as all negative for the rapid urease test and histology on both the antrum and body.