I am an herbalist and I write professionally, about herbs - Medicinal and Nutritional Properties of Plants. I will tell you that Thymol kills viruses, including Covid. zizzyphus - learn about Thyme, it could save your life. Thymol enters the cell of the virus. It then messes up the virus' molecular structure. The long form: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7571078/ the short form.. see my blog.