A total of 116 patients with proven H. pylori infection received 10-day sequential therapy ( 20 mg rabeprazole and 1 g amoxicillin , twice daily for the first 5 days , followed by 20 mg rabeprazole , 500 mg clarithromycin , and 500 mg metronidazole , twice daily for the remaining 5 days ) ; 130 patients received 7-day triple therapy ( 20 mg rabeprazole , 500 mg clarithromycin , and 1 g amoxicillin , twice daily for 7 days ) .
