Efficacy and safety of Xiangsha Liujunzi granules for functional dyspepsia: A multi-center randomized double-blind placebo-controlled clinical study

Figure 1 Study design. There was a screening period of 2 wk before randomization. Blood draw, gastroscopy, and physical examination were performed and written informed consent were obtained from all patients in this period. Study visits were arranged at -2 wk, 0 wk, 2 wk, 4 wk and 8 wk. Some questionnaires were performed by phone during the treatment period, and this was followed by a 4-wk follow-up period.