Background/Aims: This study aimed at comparing the efficacy and tolerability of 5 different regimens for Helicobacter pylori eradication in recent years. Methods:H. pylori-positive patients with dyspeptic symptoms were included and separated into 5 groups. The ‘PAC group' was given pantoprazole, amoxicillin and clarithromycin for 14 days. The ‘PAM