Preventive Effects of Qingfei Yihuo Capsules ( 清肺抑火胶囊) on Air Pollution Associated Exacerbation of Chronic Obstructive Pulmonary Disease: A Single-blind, Randomized, Controlled Trial

ConclusionFor patients with Group D COPD, oral QYCs in high-incidence season of air pollution can effectively mitigate respiratory symptoms associated with air pollution, although there was no evidence that it had a significant reductive effect on AEs. (Registered at Chinese Clinical Trial Registry, registration No. ChiCTR-IOR-17013827)
Source: Chinese Journal of Integrative Medicine - Category: Internal Medicine Source Type: research