• Akira Kuriyama and Koji Endo.
• Department of General Medicine, Emergency and Critical Care Center, Kurashiki Central Hospital, 1-1-1 Miwa Kurashiki, Okayama, 710-8602, Japan. akira.kuriyama.jpn@gmail.com.
• Support Care Cancer. 2018 Apr 1; 26 (4): 1051-1059.

PurposeChemotherapy-induced peripheral neuropathy (CIPN) limits the dose of chemotherapy and reduces patients' quality of life. Goshajinkigan is a Japanese herbal medicine used to alleviate neuropathy and general pain. A clinical guideline for prevention and management of CIPN stated that the prophylactic efficacy of goshajinkigan against CIPN was inconclusive. We conducted a systematic review to examine whether goshajinkigan prevents CIPN in patients receiving neurotoxic chemotherapy.MethodsWe searched PubMed, EMBASE, Ichushi, and the Cochrane Central Register of Controlled Trials for eligible trials. Randomized controlled trials that examined the efficacy and safety of goshajinkigan for prevention of CIPN were included. Our primary outcomes were incidence of CIPN, response to chemotherapy, and adverse effects. We pooled data using a random effects model.ResultsWe analyzed five trials involving a total of 397 patients. When evaluated with Neurotoxicity Criteria of Debiopharm, goshajinkigan was associated with reduced incidence of CIPN of grade ≥ 1 (risk ratio [RR] 0.43; 95% CI, 0.27 to 0.66) and grade 3 (RR 0.42; 95% CI, 0.25 to 0.71), but this beneficial association was not found for grade ≥ 2 of CIPN. Goshajinkigan was not associated with reduced incidence of CIPN when assessed with the National Cancer Institute Common Terminology Criteria for Adverse Events, or improved response to chemotherapy. Goshajinkigan was well tolerated based on one trial.ConclusionsGoshajinkigan is unlikely to prevent CIPN in patients undergoing neurotoxic chemotherapy. Given the low quality and insufficient amount of the evidence, use of goshajinkigan as standard of care is not currently recommended.

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