Just a heads up one of the ivermectin papers recently was retracted due to "fraud"
Now fraud is my word, the word Nature and other people are using is "plagiarism" but if you are creating fake patients in your study that is fraud even if it is easier to say plagiarism while you retract it from the "pre-print"
https://www.nature.com/articles/d41586-021-02081-w
(note the study is not a Nature study it is just talking about the discourse for papers from different review organizations cite other scientific papers)
Of course as Nature pointed out in the link above there is many other Ivermectin currently being done and by the end of the year we expect 33k people who tried the medicine in various trials. And as the link above indicates this is unrelated to the the cell culture studies, but what happens in a cell culture may not be the same that happens in the human body and if this was the case we would not need Animal Studies, or Phase 1/2/3 studies.