Inhibition of drug-metabolizing enzymes by Qingfei Paidu decoction: Implication of herb-drug interactions in COVID-19 pharmacotherapy.

"Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper."

"We'd like to thank Jointown Pharmaceutical Group Co.,Ltd. (China) for providing QPD extract and 21 single herbs. This work was supported by the 10.13039/501100012166National Key Research and Development Program of China (2020YFC0845400, 2017YFC1700200, 2017YFC1702000), the NSF of China (81922070, 81973286), Shanghai Science and Technology Innovation Action Plans (20S21901500; 20S21900900) supported by Shanghai Science and Technology Committee, Program of Shanghai Academic/Technology Research Leader (18XD1403600), the Three-year Action Plan of Shanghai TCM Development (ZY-(2018–2020)-CCCX-5001), Shuguang Program (18SG40) supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission."