Daikenchuto improved perioperative nutritional status of the patients with colorectal cancer: A prospective open-labeled randomized exploratory study.

Background and aims: The aim of this study is to exploratively evaluate the effect of Tsumura Daikenchuto Extract Granules (DKT, TJ-100) on abdominal symptoms, body weight, and nutritional function following colorectal cancer surgery.

Methods: The subjects included 20 patients for curative resection of colorectal cancer. A TJ-100 administration group (n = 10) and non-administration group (n = 10) were randomized and compared. In the administration group, TJ-100 was administered from 2 days prior to surgery up to 12 weeks following surgery. The endpoints included body weight gain, Gastrointestinal Symptom Rating Scale (GSRS), and blood biochemical factors. For the purpose of observing safety, drug adverse events were evaluated including liver function tests.

Results: Excluding one patient, we compared 9 cases in the administration group and 10 cases in the non-administration group. No obvious adverse events were observed in any of the cases. In the comparison of body weight gain, the TJ-100 administration group showed significantly higher values at 2, 4, and 12 weeks following the surgery. There was a tendency for lower stable GSRS scores in the administration group overall, with no statistically significant difference.

Conclusion: It is suggested that TJ-100 can be safely administered in the perioperative period for cases undergoing colorectal cancer surgery, potentially preventing weight loss during the early postoperative period.