METHODS	In a prospective study , 83 cirrhotic patients with epigastric pain were randomised to receive either a two-week course of dual therapy , composed of omeprazole 20 mg b.d. plus amoxycillin 1 g b.d. ( n = 41 ) or a one-week course of triple therapy , composed of omeprazole 20 mg b.d. , clarithromycin 250 mg b.d. , and tetracycline 500 mg b.d ( n = 42 ) .\