Bismuth-based quadruple therapy modified with moxifloxacin for Helicobacter pylori eradication.

Background: The aim of this study was to evaluate the efficacy, tolerability and safety of modified bismuth-based quadruple therapy for the second-line eradication treatment of Helicobacter pylori (H. pylori) infection.

Methods: Out of 758 patients treated between January 2010 and December 2015, 155 patients (20.