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Abstract
One hundred consecutive patients with Helicobacter pylori infection, as proven by culture, were treated with 120 mg colloidal bismuth subcitrate (CBS) four times daily, 250 mg tetracycline four times daily. and 250 mg metronidazole four times daily during 15 days. The patients were amply instructed in how to take the medicine and strongly urged to complete the prescribed course. In 66 of the 100 patients pretreatment metronidazole susceptibility was determined. Endoscopy was performed 3 months after cessation of treatment to check for H. pylori eradication by culture, urease testing, and histology. Side effects of the treatment were registered and classified into five groups on the basis of severity. Eradication was achieved in 93 of 100 patients (93%), in 61 of 62 patients with a metronidazole-sensitive strain (98.4%), and in 2 of 4 patients with a metronidazole-resistant strain (50%). Eighty-two per cent of the patients experienced no or just minor side effects; 15% had moderate side effects, and just 3% had severe side effects. Non-ulcer dyspepsia patients reported significantly more side effects than patients with peptic ulcer disease. With proper patient instruction, this treatment regimen is well tolerated and very effective for the eradication of metronidazole-sensitive H. pylori strains.