Skepticism regarding that:
https://chrismasterjohnphd.com/covid-19/are-chloroquine-and-hydroxychloroquine-zinc-ionophores-covid-19-updates
https://chrismasterjohnphd.com/covid-19/can-quercetin-or-egcg-reduce-the-risk-of-covid-19-covid-19-updates
Skepticism regarding that:
https://chrismasterjohnphd.com/covid-19/are-chloroquine-and-hydroxychloroquine-zinc-ionophores-covid-19-updates
https://chrismasterjohnphd.com/covid-19/can-quercetin-or-egcg-reduce-the-risk-of-covid-19-covid-19-updates