Don't know much about Ivermectin but it sounds similar. Also both seem to have anti-parasitic and anti-viral effects. E.g. https://www.praxis-schuster.ch/wp-content/uploads/2016/10/Fox.pdf This article explains the tradeoff between anti-viral and immunosuppressant properties of HCQ: https://pubmed.ncbi.nlm.nih.gov/32714335/
It says to me like everything else there are good and bad aspects to every drug and in fact everything we ingest. There are tolerance, dose, metabolism and other factors affecting the quantity we should have. Our use of such substances should be based on tests and individual health history. The self-medication craze is kind of bizarre.
palmer wrote: “HCQ is an immune inhibitor. AFAICT it helps suppress the immune system overreaction to the COVID infection.”
The fact remains that it’s better to prevent the infection with a vaccine than it is to try to fight the vaccine with therapies that haven’t been proven effective.