"A South Korean research paper has demonstrated in Vitro that by increasing the Zinc concentration in cellular cytoplasm, that viral replication is inhibited. As intracellular levels of Zinc are increased the inhibition of viral replication can reach 100% according to charts within the paper. The researchers used two antimalarial drugs which are Ionophores. Ionophores are molecules that can carry a charged ion like Zinc across a cellular membrane. South Korea has been treating high risk, Critically I’ll COVID-19 patients with the drug Hydroxychloroquine. It is likely the single clinical reason that South Korea has the lowest death rate in the world for COVID-19 victims of 0.6% Hydroxychloroquine is a pharmaceutical drug that requires a prescription. However there is a nutritional supplement called Quercetin that is a Zinc Chelator and Ionophore and requires no prescription. It’s interesting that there has been a great deal of research done on the ability of Elderberries as and antiviral agent. And Elderberries, Red Wine and Blueberries all three have high amounts of Quercetin. It may be likely that the high Quercetin content of these foods is the reason for their measurable anti-viral properties. So what would be better than supplementing Zinc and Quercetin together to elevate intracellular Zinc levels in order to inhibit viral replication? Since there have been no Clinical Trials of this supplement regimen then dosages are your best guess. But even increasing Zinc to levels that result in a thirty percent inhibition seems like a major advantage to the patient, and may be enough to tip the struggle in your favour." https://nutritionalpharmacology.wordpress.com/2020/03/21/combating-covid-19-with-zinc-and-quercetin/
Although they recommend taking some zinc to get your levels up, they don't recommend taking the quercetin along with it until you feel you have some symptoms of, or exposure to, COVID-19.
