Abstract: Journal Pre-proof The therapeutic efficacy of quercetin in combination with antiviral drugs in hospitalized COVID-19 patients: A randomized controlled trial Mojtaba Shohan, Roohangiz Nashibi, Mohammad-Reza Mahmoudian-Sani, Farhad Abolnezhadian, Mehri Ghafourian, Seyed Mohammad Alavi, Asaad Sharhani, Ali Khodadadi PII: S0014-2999(21)00771-8 DOI: https://doi.org/10.1016/j.ejphar.2021.174615 Reference: EJP 174615 To appear in: European Journal of Pharmacology Received Date: 18 June 2021 Revised Date: 23 October 2021 Accepted Date: 1 November 2021 Please cite this article as: Shohan, M., Nashibi, R., Mahmoudian-Sani, M.-R., Abolnezhadian, F., Ghafourian, M., Alavi, S.M., Sharhani, A., Khodadadi, A., The therapeutic efficacy of quercetin in combination with antiviral drugs in hospitalized COVID-19 patients: A randomized controlled trial, European Journal of Pharmacology (2022), doi: https://doi.org/10.1016/j.ejphar.2021.174615. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2021 Published by Elsevier B.V. Authorship contribution statement Mojtaba Shohan: Conceptualization, Methodology, Writing original draft, Writing – review and editing. Roohangiz Nashibi: Visualization, Supervision. Mohammad-Reza Mahmoudian-Sani: Methodology, Investigation. Farhad Abolnezhadian: Supervision. Mehri Ghafourian: Review and editing. Seyed Mohammad Alavi: Supervision. Asaad Sharhani: Formal analysis, Visualization. Ali Khodadadi: Jo ur na lP re -p ro of Supervision, Conceptualization, Funding acquisition. And The therapeutic efficacy of quercetin in combination with antiviral drugs in hospitalized COVID-19 patients: A randomized controlled trial Mojtaba Shohan a,b , Roohangiz Nashibi c , Mohammad-Reza Mahmoudian-Sani d Farhad Abolnezhadian e , Mehri Ghafourian a , Seyed Mohammad Alavi c , Asaad Sharhani f , Ali Khodadadi a,g a Department of Immunology, School of M edicine, Ahvaz Jundishapur University of M edical Sciences, Ahvaz, Iran b Student Research Committee, Ahvaz Jundishapur University of M edical Sciences, Ahvaz, Iran of c Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of M edical ro Sciences, Ahvaz, Iran -p d Thalassemia and Hemoglobinopathy Research Center, Health Research Institute, Ahvaz Jundishapur University of M edical re Sciences, Ahvaz, Iran lP e Department of Pediatrics, Abuzar children's hospital, Ahvaz Jundishapur University of M edical Sciences, Ahvaz, Iran f Department of Epidemiology and Biostatistics, School of public health, Ahvaz Jundishapur University of M edical Sciences , na Ahvaz, Iran Jo ur g Cancer Research Center, Ahvaz Jundishapur University of M edical Sciences, Ahvaz, Iran Corresponding author: Dr. Ali Khodadadi, Professor in Immunology Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran E-mail Address: akhodadadi2@gmail.com and..