The Efficacy of the 7 Days Tailored Therapy as the 1st Eradication of H. Pylori Infection

Inclusion Criteria: * The patients who proved H. pylori infection following three methods 1. positive rapid urease test (CLOtest) 2. histologic evidence of H. pylori by modified Giemsa staining 3. positive Urea breath test * Male and female Korean Adult (Aged ≥ 18 years) Exclusion Criteria: * Patients who received eradication therapy for H. pylori infection, previously * H. pylori eradication failure because of poor compliance * the administration of antibiotics or the consumption of bismuth salts within 4 weeks or the administration of a proton pump inhibitor (PPI) within 2 weeks * Advanced gastric cancer or other malignancy * Abnormal liver function or liver cirrhosis * Abnormal renal function or chronic kidney disease * Other severe concurrent diseases * Previous allergic reactions to the study drugs * Pregnant or lactating women