It is designed as a multicenter, randomized, double-blind, double-simulation, high and low dose group, active comparator-controlled, parallel-group study to investigate the efficacy and dose-effect relationship of X842 capsules at different dosages in the treatment of reflux esophagitis for 4 weeks in comparison with lansoprazole enteric-coated capsules.
The purpose of the study is to investigate the efficacy and dose-effect relationship of X842 capsules at different dosages in the treatment of reflux esophagitis for 4 weeks in comparison with lansoprazole enteric-coated capsules.