The "root" of the Ivermectin craziness seems to be a study that found an effect against the virus in vitro, probably in cell cultures. Not sure about the detail

The "root" of the Ivermectin craziness seems to be a study that found an effect against the virus in vitro, probably in cell cultures. Not sure about the details. Everything else is anecdotal. Quite a few Covid-19 patients do survive, and when doctors prescribe it, they are not doing randomized controlled trials, so they can easily fool themselves and others into thinking Ivermectin works.