Background: The aim of this study was to evaluate the clinical efficacy of Xuanfei Baidu Decoction (XBD) combined with conventional drug therapy compared with conventional medicine alone in patients with coronavirus disease 2019 (COVID-19). Methods: Forty-two patients with COVID-19 were randomly assigned to XBD plus conventional medicine (n = 22) and conventional medicine alone (n = 2... https://herbsdailyes.shop/product-category/hearing-protection/