Antiviral, immunomodulatory, and anticoagulant effects of quercetin and its derivatives:
Potential role in prevention and management of COVID-19
I take quercetin for CML. Nice to see it works on the same replication cycles present in the flu virus'. Makes sense as I think about it.
So much in food can help us stay healthy (red onions are loaded with quercetin). Quercetin alone is likely not enough, but together with vitamin D, and C and zinc and other lifestyle factors which keep your immune system strong even as we age, infectious disease will have a tough time getting a foothold.