14-day Quadruple Therapy Versus Triple Therapy in HP Eradication

patient randomized in QC will be treated by a double dose PPI (esomeprazole: 40 mg x 2 per day) in combination with amoxicillin (1 g x 2 per day), metronidazole (500 mg x 2 per day) and clarithromycin (500 mg x 2 per day)

patient randomized in TT will be treated by double dose PPI (esomeprazole: 40 mg x 2 per day) in combination with amoxicillin (1 g x 2 per day), clarithromycin (500 mg x 2 per day) and a placebo of metronidazole.