You do realize that ivermectin is as much a horse medicine as penicillin? In other words not at all. Both are human drugs that, like many others, are given to animals. The fact that penicillin is given to horses does not make it a horse antibiotic. Labelling ivermectin a horse paste was a clever piece of propaganda that worked on ignoramuses who did not realize that ivermectin has been used in humans for decades and is considered one of the essential drugs by the WHO. Aside from whether it is effective on covid, it has saved millions of lives from parasites.