“…Shuang‐Huang‐Lian oral liquid (SHL) is a TCMF comprising three herbs: Scutellaria baicalensis , Forsythia suspensa and Lonicera japonica at a ratio of 1:2:1 (Chinese Pharmacopoeia Commission, ). It has been widely used in clinic for the treatment of respiratory diseases, including acute upper respiratory tract infection (Ni, Zhang, Hou, Shi, & Guo, ; Zhang et al, ), acute bronchitis (Ma et al, ) and tonsillitis with significant effect (Cao, Wang, Yu, & Ye, ). Moreover, SHL is the recommended TCMF for treatment of influenza in the Influenza Diagnosis and Treatment Guidelines (2011 edition) in China.…”