I have Ginko Biloba, Zinc and Vitamin D3 stocked in case I get Wuhan Virus and the Democrats withhold hydroxychloroquine from me in my state.
It really could pose an ethical choice for a doctor who believes HCQ is effective (in concert with zinc and an antibiotic) for his patient but would have to lie to his phamacist who has been prohibited by Blue state government to fill a HCQ prescription for the virus and must question the doctor about its use.
Probably better to just get Quercetin extract rather than rely on Ginko which may have varying levels of Quercetin. You should be taking your vitamin D regularly, not just stocking it as it will be too late if you start when you feel symptoms. Hold off on taking Zinc in large doses as it IS a poison. Long term use can cause big problems. But, you can take Quercetin prophylactically as it has some nice properties all by itself, and just add Zinc when a sniffle threatens.