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Therapeutic Effect of Chang’an I Recipe (肠安 I 号方) on Irritable Bowel Syndrome with Diarrhea: A Multicenter Randomized Double-Blind Placebo-Controlled Clinical Trial

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Abstract

Objective

To evaluate the efficacy and safety of Chinese medicine (CM) decoction Chang’an I Recipe (肠安 I 号方) in the treatment of irritable bowel syndrome with diarrhea (IBS-D).

Method

A multicenter, randomized, double-blind, placebo-controlled clinical trial was designed. Based on the order of inclusion, the IBS-D patients were randomly assigned to the treatment group or the placebo control group, administrated with Chang’an I Recipe or placebo, 150 mL/bag, 3 times daily, for 8 weeks. The primary indices of efficacy included the effective rates of IBS symptom severity score (IBS-SSS) and the differences in adequate relief (AR) responder; the secondary indexes of efficacy included the changes in scores of the IBS Quality of Life (IBS-QOL) and Hospital Anxiety and Depression (HAD) scales. The safety indices included adverse events and related laboratory tests.

Results

A total of 216 patients were included, with 109 in the treatment group and 107 in the control group, and finally 206 were included in the full analysis set (FAS), 191 were included in the per protocol set (PPS). In FAS, the total effective rate was 67.6% and 40.2% for the treatment and control groups, respectively, with 95% confidence interval (CI) for difference in the effective rates between the two groups of 14.4%–40.2%; while in PPS, the total effective rate was 71.3% and 41.2% for the treatment and control groups, respectively (95% CI 16.6%–43.4%). The consistent conclusions of FAS and PPS showed a better efficacy in the treatment group. Both FAS and PPS showed higher AR responder in the treatment group (FAS: 59.6% vs. 35.5%; PPS: 62.8% vs. 38.1%). As for IBS-QOL, the total score and scores in various dimensions of IBS-QOL were not significantly different between the two groups (P>0.05). Both anxiety and depression scales of HAD were not significantly different between the two groups (P>0.05). No adverse events or laboratory abnormalities were found to be obviously related to the tested drugs or clinically significant.

Conclusion

Chang’an I Recipe was more effective than placebo in the treatment of IBS-D, with no obvious adverse reactions. (No.ChiCTR-TRC-09000328)

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Authors and Affiliations

  1. Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, 100091, China

    Xu-dong Tang, Zhen-hua Li, Bao-shuang Li, Rui Gao, Feng-yun Wang, Fang Lu, Li-qun Bian, Ying-pan Zhao, Ping Wang & Yin-qiang Zhang

  2. Department of Gastroenterology, Zhejiang Provincial Hospital of Traditional Chinese Medicine, Hangzhou, 310000, China

    Bin Lu

  3. Department of Gastroenterology, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China

    Wei Wei & Li-na Meng

  4. Department of Gastroenterology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, China

    Zhi-peng Tang

Authors
  1. Xu-dong Tang
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  2. Bin Lu
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  3. Zhen-hua Li
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  10. Fang Lu
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  14. Yin-qiang Zhang
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Corresponding author

Correspondence to Xu-dong Tang.

Additional information

Supported by China International Sciences and Technology Cooperation Program (No. 2007DFA30560)

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Tang, Xd., Lu, B., Li, Zh. et al. Therapeutic Effect of Chang’an I Recipe (肠安 I 号方) on Irritable Bowel Syndrome with Diarrhea: A Multicenter Randomized Double-Blind Placebo-Controlled Clinical Trial. Chin. J. Integr. Med. 24, 645–652 (2018). https://doi.org/10.1007/s11655-016-2596-9

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  • DOI: https://doi.org/10.1007/s11655-016-2596-9

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