Since Nigella sativa, Ivermectin and Pfizermectin are all protease inhibitors, I have taken it upon myself to start up this big fat list of every protease inhibitor I can find, and look for any studies on any of them for use to treat C19 or respiratory viruses, in general.
I was pleased to find out that Ginkgo leaf, which I drink in tea regularly, not only has quercetin, which I knew about, but another, less known protease inhibitor called rutin, as well.
Let's begin:
The study:
https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC7985176/
The plants:
Torreya nucifera - A Japan / Korean native plant with a long history of use in food and other purposes like making vegetable oil.
Isatis tinctoria - Also used for centuries as an herbal medicine. Also used in blue dyes, oddly enough, but is still usable as traditional medicine.
Rheum palmatum AKA Chinese rhubarb - edible, with a long history use in traditional medicine.
Psoralea corylifolia - Another plant with a long history of use in traditional medicine.
The study:
https://pubmed.ncbi.nlm.nih.gov/22465253/ (Not for coronavirus, but still demonstrated efficacy in inhibiting viral activity.)
Fisetin - Compound found in many fruits and vegetables, including strawberries.
Rutin - Compound found in many fruits, vegetables, and other common edible herbs. This includes buckwheat, eucalyptus, elder flowers (also high in zinc!), and ginkgo leaf (also contains quercetin!).
And guess what? Rutin and fisetin supplements are available over the counter! Talk to your doctor to make sure it won't conflict with any other medications you take, or pre-existing conditions, and think about throwing that in with your daily Z-Stack!
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Can vouch for Nigella Sativa (Black Seed Oil). Just had COVID and with that as well as C, D3 and Zinc got over it with fluids and sleep (lots of sleep). Coughed up half a lung every day (noisy nuisance, sounded worse than it was) but so long as I kept up on fluids and used Xlear nasal spray and Listerine mouthwash it helped to keep the virus from replicating and my body was able to fight it off. Very glad for Black Seed Oil.
Years ago I saw a study (one of the big nurses studies of the 80/s90s I think) that found the participants who ate the most strawberries lived longer than the others. Strawberries are the best-known source of fisetin.
Newer research bears that out and explains why. See also here for more; many of these have a good number of references for those interested.
Correction - strawberries are the best known source of fisetin that is not deathly poisonous to humans due to other, non-fisetin compounds also present in the plant. ;)
Ah. Did not know that. Nice that such a tasty treat is the non-poisonous exception to the rule.
Grow your own.
https://territorialseed.com/products/nigella-sativa Nigella sativa seeds
https://www.plantmegreen.com/products/gingko-biloba-seedling Gingko seedling. These are easy trees to find at local nurseries. If you hate raking leaves only to have more on the ground the next day you will love Gingko. They drop all their leaves in one day.
https://www.brokenarrownursery.com/torreya-nucifera-japanese-torreya.html seedlings? Maybe.
https://www.superseeds.com/products/woad Isatis tinctoria aka dyer's woad. Pinetree Garden is a great seed source and very reasonable prices.
Rheum palmatum https://strictlymedicinalseeds.com/product/rhubarb-turkey-tanguticum-rheum-palmatum-tanguticum-packet-of-10-seeds/
No luck with Psoralea corylifolia.
If you live in California there are Eucalyptus trees everywhere. They practically grow here like weeds because of those goddamn Australians (just kidding Aussies, we love you).
Elder flowers are apparently easy to grow too.
There are elderberry plants all over Michigan. Did a job this fall and we all came home with purple stains all over us because of the abundance of these plants on the job site.
I grow them on my fence line in the back 40. Wife makes jams and iced drinks and I make wine from them.
Here you go. And you can make wine from the berries. The berries are used as a supplement too for colds or flu.
https://www.starkbros.com/products/berry-plants/elderberry-plants
No eucalyptus trees here. They wouldn't survive the winters.
Thank for this and I will share with family and friends.
Ginkgo leaf and buckwheat are easy to find in organic supermarkets. Chinese rhubarb is harder to find and usually I have seen it in Chinese supermarkets.
Ginkgo leaf is my favorite.
If you mix in lemongrass, guayusa leaf, ginkgo leaf, and elder flowers, you get good solid quantities of vitamin C, vitamin D, zinc, quercetin, and rutin. Plus it even has some caffeine, theanine, and theophylline, and many other nutrients to give you some hearty, balanced energy.
Drink that every day, maybe toss in some Reishi mushroom or Eleutherococcus root, and you'll be strong as an ox, I say!