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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Pharmacol. | doi: 10.3389/fphar.2019.00991

The Efficacy and Safety of Myelophil, an Ethanol Extract Mixture of Astragali Radix and Salviae Radix, for Chronic Fatigue Syndrome: A Randomized Clinical Trial

  • 1Liver and Immunology Research Center, Oriental Medical Collage, Daejeon University, South Korea
  • 2Daejeon St. Mary’s Hospital, Catholic University of Korea, South Korea
  • 3Department of Health Service Management, Daejeon University, South Korea

Background: There is a strong demand for therapeutics to treat chronic fatigue syndrome (CFS), although there are limitations. Myelophil, which is a combination of extracts from Astragali Radix and Salviae Miltiorrhizae Radix, has been clinically used to treat fatigue-related disorders in South Korea. We conducted a randomized controlled clinical trial of Myelophil in patients with CFS and evaluated its efficacy and safety in two hospitals.
Methods: We enrolled 98 participants (M: 38, F: 60) with CFS in a phase 2 trial of oral Myelophil (2 g daily) or placebo for 12 weeks. The primary endpoint was a change in the Chalder fatigue scale, as scored by a numeric rating scale (NRS). The secondary endpoints included changes in the VAS, FSS, and SF-36. Biomarkers of oxidative stress and cytokines were evaluated by blood tests.
Results: Ninety-seven participants (48 in the Myelophil group and 49 in the placebo group) completed the trial. An analysis of all participants showed that Myelophil slightly improved fatigue symptoms compared to those of the placebo, but this effect was not statistically significant (p > 0.05 for the NRS, VAS, FSS and SF-36). By contrast, an analysis of the subpopulation (53 participants, M: 24, F: 29) with severe symptoms (≥ 63, median NRS value of total participants) showed a statistically significant improvement in fatigue symptoms in the Myelophil group compared to the placebo (p < 0.05 for NRS, FSS, and SF-36). There were no significant changes in the biomarkers for oxidative stress and cytokines before or after the treatment. No Myelophil-related adverse response was observed during the trial.
Conclusion: These results support the hypothesis that Myelophil can be a therapeutic candidate to manage CFS and provide the rationale for its progression to a phase 3 clinical trial.

Keywords: Chronic fatigue syndrome (CFS), systemic exertion intolerance disease, Myelophil, Astragali Radix, Salviae Mitiorrhizae Radix, clinical trial (RCT)

Received: 12 Feb 2019; Accepted: 05 Aug 2019.

Edited by:

Adolfo Andrade-Cetto, National Autonomous University of Mexico, Mexico

Reviewed by:

Maria Luisa Del Moral, University of Jaén, Spain
Ping Chung LEUNG, The Chinese University of Hong Kong, China  

Copyright: © 2019 Joung, Lee, Cho, Lee, Ahn and Son. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Chang-Gue Son, Liver and Immunology Research Center, Oriental Medical Collage, Daejeon University, Daejeon, South Korea, ckson@dju.ac.kr