Resveratrol and polyphenols appear to be useful for reducing the effects of covid.

https://pubmed.ncbi.nlm.nih.gov/32985211/

https://www.proquest.com/docview/2602127240

My Doctor recommends drinking Quinine water and has written me 2 prescriptions for Quinine. Problem is: finding some place that will fill it.

I glad you brought this about Quinine water to my attention. I used to drink it, now I got to get back to drinking it again. When I first started drinking it, it was terrible. Then, I got used to it and then really enjoyed drinking it.

Nasal Spray With Iota-Carrageenan Decreases Risk for COVID-19 in Exposed Healthcare Workers
https://www.infectiousdiseaseadvisor...hcare-workers/

I bought some Iota-Carrageenan last year. If I shake the bag its in and open it, some of it comes out in the form of a dust and I can breath some of it into my nose.

The use of vitamin D for increasing resistance to Covid and the use of vitamin K2 is discussed here:

Vitamin D in Israel
https://www.youtube.com/watch?v=w9h-XQm2qEY

vitamin K2 is associated with the inhibition of arterial calcification and arterial stiffening
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4566462/

If You’ve Had COVID You’re Likely Protected for Life
https://www.theepochtimes.com/if-you...m_medium=email

Factors that can influence your vitamin D absorption include your magnesium and vitamin K2 intake.
https://www.theepochtimes.com/florid...m_medium=email

quercetin
https://www.theepochtimes.com/fights...m_medium=email

Licorice Inhibits Replication of Coronavirus
https://www.theepochtimes.com/licori...m_medium=email

How to Improve Zinc Uptake With Quercetin
https://www.theepochtimes.com/how-to...m_medium=email

NAC’s Crucial Role in Preventing and Treating COVID-19
https://www.theepochtimes.com/nacs-c...K7wcKySQ%3D%3D

https://pubmed.ncbi.nlm.nih.gov/26977590/