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KMID : 0861120200240010001
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Korean Journal of Oriental Preventive Medicine
2020 Volume.24 No. 1 p.1 ~ p.14
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Sanjoin-tang (Suanzaoren decoction) for Insomnia in Menopausal Syndromes: A Systematic Review and Meta-analysis
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Jun Ji-Hee
Choi Tae-Young
Lee Myeong-Soo
Song Eun-Hye
Lin Ang
Park Sun-Ju
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Abstract
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Objectives : The purpose of this systematic review was to investigate the efficacy and safety of Sanjointang (Suanzaoren decoction, SZRD) for insomnia in menopausal syndromes.
Method : We searched the following databases: PubMed, Cochrane Library, EMBASE, China National Knowledge Infrastructure (CNKI), Chinese Science and Technique Journals Database (VIP), Wanfang, Research Information Service System (RISS), OASIS, Korean studies Information Service System (KISS), and National Digital Science Library (NDSL) databases. Randomized controlled trials (RCTs) or quasi-RCTs that used SZRD for women in menopause were included. The methodological quality of each RCT was assessed using the risk of bias tool.
Results : In total, nine RCTs were finally included. The included RCTs had a high risk of bias across their domains. Three RCTs examined the effects of SZRD compared with western medicine (WM) in insomnia. Three RCTs showed favorable effects of SZRD with insomnia. Infrastructure also showed that SZRD resulted in better clinical WM (RR 1.19, 95% CI 1.07 to 1.32, P=0.001, I2=0%). Four RCTs showed favorable effects of Modified SZRD with insomnia. Infrastructure also showed that Modified SZRD resulted in better clinical WM (RR 1.13, 95% CI 1.04 to 1.23, P=0.004, I2=0%). Among the 4 RCTs, three RCTs showed an equivalent effect on the total Pittsburh Sleep Quality Index (PSQI). The meta-analysis also showed that Modified SZRD had a superior effect on the total of PSQI (total of PSQI : MD -2.55, 95% CI -3.72 to -1.37, P<0.0001, I2=85%). Only 2 trials reported adverse events and none reported severe adverse events.
Conclusion : SZRD appears to be safe, but there is insufficient evidence to make a definitive conclusion because only a few studies reported adverse events. Due to the poor methodological quality of the included studies and the small number of trials included, the evidence cannot be reproduced and assessed. Welldesigned RCTs with a larger sample size are needed in the future.
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KEYWORD
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Sanjoin-tang, Suanzaoren decoction, systematic review, menopausal syndromes
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