Efficacy and safety of Yangxue Qingnao granules for the treatment of essential hypertension: A protocol for systematic review and meta-analysis

BACKGROUND: Essential hypertension is a major risk factor for many fatal cardiovascular and cerebrovascular diseases and has become a heavy burden on families and society. At present, the prevention and treatment of essential hypertension is still unsatisfactory. Yangxue Qingnao granules is a kind of Chinese patent medicine that has been used to treat essential hypertension. The objective of this protocol is to systematically evaluate the efficacy and safety of Yangxue Qingnao granules in the treatment of essential hypertension. METHODS: Randomized controlled trials on Yangxue Qingnao granules for essential hypertension will be searched from the following databases: PubMed, EMbase, Web of Science, Cochrane Library, China National Knowledge Infrastructure, Wanfang Data, China Science and Technology Journal Database, and China Biology Medicine disc from inception to August 27, 2021, regardless of language. Study screening and data extraction will be carried out by two independent reviewers. The quality of the included studies will be assessed using Cochrane risk-of-bias tool for randomized trials. Statistic analysis will be performed using RevMan 5.3 software. The quality of evidence will be assessed using GRADE approach. RESULTS: This study will systematically evaluate the efficacy and safety of Yangxue Qingnao granules in the treatment of essential hypertension and provide high-quality evidence for clinical practice. CONCLUSION: The findings of this systematic review will provide high-quality evidence to verify the efficacy and safety of Yangxue Qingnao granules in the treatment of essential hypertension. INPLASY REGISTRATION NUMBER: INPLASY202190015.