I live in a place/country where the feed stores sell ivermectin in little packs of powder, 3mg active ingredient (ivermectin) per pack. I had been using it for a year on rabbits for external parasites when I saw it mentioned here as good against covid. No covid here but one day I had chiggers, had my spray bottle in my hand, no more chiggers. Since then I've found other uses around the farm. I had a chicken dying of a disease passing around, looked it up, its a viral disease, gave the chicken a dose of my spray water, cured after a week. A friend gave his rabbit an ivermectin injection, but made a mistake and overdosed 10x. Rabbit cured and recovered, did not die. Hmmm....not so dangerous, Read of a study in German universities using iver against cancer, don't have the link anymore