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  • Title: Ranitidine bismuth citrate with clarithromycin given twice daily effectively eradicates Helicobacter pylori and heals duodenal ulcers.
    Author: Bardhan KD, Wurzer H, Marcelino M, Jahnsen J, Lotay N, Roberts PM.
    Journal: Am J Gastroenterol; 1998 Mar; 93(3):380-5. PubMed ID: 9517644.
    Abstract:
    OBJECTIVE: Ranitidine bismuth citrate (RBC) b.i.d. with clarithromycin q.i.d. eradicates Helicobacter pylori (H. pylori) in 82-94% of patients, and heals duodenal ulcers in 88-90% of patients. This double blind, placebo-controlled study examines the efficacy of a simpler b.i.d. treatment regimen, and examines the potential benefit of including a second antibiotic, metronidazole, to the b.i.d. treatment regimen. METHODS: A total of 648 patients with active duodenal ulcer received RBC 400 mg b.i.d. for 4 wk, coprescribed with clarithromycin 250 mg q.i.d., clarithromycin 500 mg b.i.d., or clarithromycin 500 mg b.i.d. with metronidazole 400 mg b.i.d. for the first 2 wk of treatment. Endoscopies were performed prestudy, after 4 wk of treatment, and at least 4 wk posttreatment. H. pylori status was assessed by CLOtest, 13C-urea breath test (UBT), and histology prestudy, and by UBT and histology at least 4 wk posttreatment. Adverse events were recorded at each visit. RESULTS: All three regimens were highly effective and well tolerated. H. pylori eradication rates were 84-94% and duodenal ulcer healing rates were 92-96% (observed data). Highest H. pylori eradication and ulcer healing rates were achieved with RBC 400 mg b.i.d. with clarithromycin 500 mg b.i.d. CONCLUSION: Ranitidine bismuth citrate with clarithromycin 500 mg b.i.d. provides an effective, simple and well tolerated regimen for the eradication of H. pylori and healing of duodenal ulcers.
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