Efficacy and safety of Zuojin Pill for chronic gastritis: Protocol for a systematic review of randomized controlled trials.

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Background:Chronic gastritis (CG), as the highest incidence of gastrointestinal diseases, has been gradually increasing around globally. With the obvious disadvantages of standard treatment, more and more people ask the traditional Chinese medicine for help in the treatment of CG. As a traditional Chinese medicine compound, Zuojin Pill (ZJP) has a long history of clinical application in the treatment of digestive system diseases. Whereas, neither systematic nor meta-analysis of randomized controlled trials explain the efficacy and safety of ZJP in treating CG. Thus, we provide a protocol to evaluate the efficacy and safety of ZJP for CG.Methods:From the beginning to December 2019, the following electronic databases will be searched for studies in English or Chinese: the Cochrane Library, Embase, PubMed, Web of Science, the Chinese National Knowledge Infrastructure, the Chinese Biomedical Literature Database, the Chinese Scientific Journal Database, and the Wanfang Database. Clinical efficiency, helicobacter pylori infection clearance rate, quality of life and symptom scores will be measured as primary outcomes. Meta-analysis will be performed using the Stata 15.Outcomes:This study will provide the current evidence of CG treated with ZJP from the several aspects including clinical efficiency, helicobacter pylori infection clearance rate, quality of life, symptom scores, the 1-year recurrent rate, efficacy under endoscopy and number of reported adverse events associated with the use of ZJP.Conclusion:The outcomes of this review will be served as a proof to evaluate if ZJP is effective in the treatment of CG.PROSPERO registration number:PROSPERO CRD42020155036.