Just wondering ... we know that both hydroxychloroquine and ivermectin have had significant success as treatments for covid. Yesterday, I saw a South African doctor, doctor Chetty, speaking about the great success he'd had with promethazine. (A drug I've not previously heard of) Also, a few days or a week ago someone posted a link about Niacin and Melatonin being used by a doctor with promising results.

So my question for you pharmalogical types is, do you see a connection between those drugs? I am just curious if they have something in common that would explain why they have all been successful, OR, if it just happens that they are all completely different, yet effective in their own ways. Would love to hear your expertise on the matter. Thanks!