Allicin as add-on therapy for Helicobacter pylori infection: A systematic review and meta-analysis

Figure 1 Flowchart showing the process of study selection for the systematic review. We identified 211 records. Totally 201 records were excluded as duplicated records, non-clinical trials, unrelated articles, and non-PTT/BCQT controlled trail. Another two records were excluded after full-text screening due to non-standard triple therapy of amoxicillin-bismuth-PPI and different triple therapy regimens in the allicin and control groups, respectively. Finally, a total of eight RCTs with 867 subjects were included. CNKI: the China National Knowledge Infrastructure Database; CMB: Chinese Medical Databases.