期刊
PRIMARY CARE RESPIRATORY JOURNAL
卷 19, 期 4, 页码 307-314出版社
PRIMARY CARE RESPIRATORY SOC-PCRS UK
DOI: 10.4104/pcrj.2010.00041
关键词
asthma; herbal; complementary; systematic review; meta-analysis
资金
- St George's, University of London UK
- Peninsula College of Medicine and Dentistry/Plymouth teaching PCT UK
Aims: To assess the efficacy of herb and plant extracts in the management of asthma. Method: Systematic review and meta-analysis. Multiple database searches identified randomised placebo controlled trials of herbal interventions reporting at least one primary outcome measure. Where possible data were combined for meta-analysis. Primary outcome measures were lung function, exacerbations and reduction in corticosteroid use. Secondary outcome measures were symptoms and symptom scores, use of reliever medications, changes in rates of consultation and adverse effects. Results: Twenty-six studies reporting on 20 herbal preparations were included. Two of six studies reporting change in FEV1 were positive. Little data was available on frequency of exacerbations. For primary outcomes single studies of Boswellia, Mai-Men-Dong-Tang, Pycnogenol, Jia-Wei-Si-Jun-Zi-Tang and Tylophora indica showed potential to improve lung function, and a study of 1.8-Cineol (eucalyptol) showed reduced daily oral steroid dosage. Conclusions: Improvements in symptoms were not strongly supported by objective changes. Most trials were of small sample size, short duration, and poor methodology. Further adequately powered trials are needed to assess these compounds. Such trials should conform to CONSORT guidance, report standardised spirometry, and use validated symptom and severity scores. No recommendations for herbal treatment of asthma can be made from the current evidence. (c) 2010 Primary Care Respiratory Society UK. All rights reserved. C Clark et al. Prim Care Resp J 2010; 19(4): 307-314 doi:10.4104/pcrj.2010.00041
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