A Multi-center, Double-blinding, Parallel and Positive-controlled Phase III Clinical Trial for Efficacy and Safety Evaluation of Ilaprazole Sodium for Injection on Prevention of Stress Ulcer Bleeding

The purpose of this study is to evaluate the efficacy of the study drug (Ilaprazole Sodium for Injection) for potential effect on preventing stress ulcer bleeding in vulnerable population by comparing the radio of upper gastrointestinal bleeding when they are administered Ilaprazole Sodium for Injection and Esomeprazole Sodium for Injection respectively.