This is interesting. I got a bottle of quercetin sometime during the recent pandemic because it can act as a zinc ionophore.
Quercetin and Vitamin C: An Experimental, Synergistic Therapy for the Prevention and Treatment of SARS-CoV-2 Related Disease (COVID-19)
https://www.frontiersin.org/articles...020.01451/full
Quercetin as Zinc Ionophore and COVID-19 Outpatient Management
https://www.youtube.com/watch?v=W9YFXo84lCk
Zinc Ionophore Activity of Quercetin and Epigallocatechin-gallate: From Hepa 1-6 Cells to a Liposome Mode
https://od.lk/s/OV8xNzM0ODgyNDdf/dab...rbachi2014.pdf
Epigallocatechin-gallate is found in tea. I've been drinking green tea everyday.
https://en.wikipedia.org/wiki/Epigallocatechin_gallate