Japanese Herbal Medicine for Gastrointestinal Cancer This study was a systematic review on the use of Daikenchuto (DKT) on gastrointestinal motility in patients undergoing abdominal surgery, to see if it could help relieve postoperative ileus (1). The researchers identified pertinent studies in several medical databases and applied statistical analyses. The results showed that there were 7 studies with 1134 patients who were included. Overall, DKT significantly reduced the occurrence of postoperative ileus, in comparison to those who did not receive it, or those who received placebo.