Quercetin = Antiviral?

"Quercetin displays a broad range of antiviral properties which can interfere at multiple steps of pathogen virulence -virus entry, virus replication, protein assembly- and that these therapeutic effects can be augmented by the co-administration of vitamin C."
https://www.collective-evolution.com/2020/07/20/new-study-strongly-suggests-giving-covid-19-patients-vitamin-c-quercetin/

"There is evidence that vitamin C and quercetin co-administration exerts a synergistic antiviral action due to overlapping antiviral and immunomodulatory properties and the capacity of ascorbate to recycle quercetin, increasing its efficacy."
https://www.frontiersin.org/articles/10.3389/fimmu.2020.01451/full

"This study indicates that quercetin showing inhibitory activity in the early stage of influenza infection provides a future therapeutic option to develop effective, safe and affordable natural products for the treatment and prophylaxis of IAV infections."
https://pubmed.ncbi.nlm.nih.gov/26712783/

"For example, research28 funded by the U.S. Department of Defense, published in 2007, found it lowers your risk of viral illness and boosts mental performance following extreme physical stress, which might otherwise undermine your immune function and render you more susceptible to infections."
https://www.lewrockwell.com/2020/01/joseph-mercola/more-health-benefits-of-quercetin-revealed/

"Quercetin may act in more than one way to deter viral infection, exhibiting some preventive and powerful therapeutic effects."
https://pressbanner.com/quercetin-a-natural-anti-viral-and-anti-inflammatory/