Well, that would explain why hydroxchloriquin works against. Quinine used to treat malaria.
I wondered why ivermectin worked against a virus, but that would make sense if a parasite. It's used to worm animals and I think, mites. I worm my dogs with it.
I use the injectable made for cow's and pigs.
One drop on a small piece of bread, then cover it with bacon grease and feed it to them. They love it. Once a month during the summer. Less often in the winter. Been doing it for years.