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Evidence-Based Complementary and Alternative Medicine
Volume 2013 (2013), Article ID 540613, 8 pages
http://dx.doi.org/10.1155/2013/540613
Review Article

Is Yangxue Qingnao Granule Combined with Antihypertensive Drugs, a New Integrative Medicine Therapy, More Effective Than Antihypertensive Therapy Alone in Treating Essential Hypertension?

1Department of Cardiology, Guang′anmen Hospital, China Academy of Chinese Medical Sciences, Beixiange Street No. 5, Xicheng, Beijing 100053, China
2The First Clinical Medical College, Nanjing University of Chinese Medicine, Jiangsu 210029, China
3Department of Cardiology, Traditional Chinese Medicine Hospital of Wujin District, Changzhou 213100, China
4Department of Cardiology, Jiangsu Traditional Chinese Medicine Hospital, Jiangsu 210029, China
5Basic Medical College, Beijing University of Chinese Medicine, Beijing 100029, China
6Department of Cardiology, Beijing Traditional Chinese Medicine Hospital, Capital Medical University, Beijing 100010, China

Received 19 November 2012; Accepted 15 January 2013

Academic Editor: Tabinda Ashfaq

Copyright © 2013 Jie Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Yangxue Qingnao granule (YQG) combined with antihypertensive drugs, a new integrative medicine therapy, has been widely used for essential hypertension (EH) in China. This study aims to assess the current clinical evidence of YQG combined with antihypertensive drugs for EH. Methods. Randomized controlled trials(RCTs) published between 1996 and 2012 on YQG combined with antihypertensive drugs versus antihypertensive drugs in treating EH were retrieved from six major electronic databases, including The Cochrane Library, PubMed, Chinese National Knowledge Infrastructure, Chinese Scientific Journal Database, Chinese Biomedical Literature Database, and Wanfang Data. Meta-analysis was performed on the overall effects on blood pressure. Results. Twelve randomized trials were included. Methodological quality of the trials was evaluated as generally low. Meta-analysis showed that YQG combined with antihypertensive drugs demonstrated potential effect for lowing either SBP (MD: −7.31 [−11.75, −2.87]; ) or DBP (MD: −5.21 [−8.19, −2.24]; ) compared to antihypertensive drugs alone. Conclusions. It indicated that YQG combined with antihypertensive drugs is more effective than antihypertensive drugs alone in treating EH. However, more RCTs of larger scale, multicentre/country, longer follow-up periods, and higher quality are required to verify the efficacy of integrative medicine therapy over all antihypertensive therapies.