A reasonable, responsible government that actually cared about people's lives would not be screaming "HORSE DEWORMER, HORSE DEWORMER!"
A reasonable, responsible government would be saying exactly this:
"Even though ivermectin has not been approved by the FDA to treat covid-19, there is still some evidence to suggest it can help reduce the severity and duration of illness. If you attempt to use Ivermectin formulated for large farm animals, make sure to reduce the dosage accordingly to adjust for human body weight so you do do not overdose on medication."
But no, they started screaming, "HORSE DEWORMER!!!"
I hate these people.
I do not have direct experience with ivermectin.
I do have experience researching chemical MSDS sheets and understanding the many complexities that go into how and why certain medications are approved or not.
I am staunchly against big pharma for many reasons, and have been fighting with them for longer than Q has even existed, but I do not see taking the route of using livestock medication to be a particularly well-thought-out strategy for fighting them.
The Japan thing was the chairperson recommending ivermectin back in February, and he did not set it as policy. Months later (today), ivermectin is still not approved in Japan, as far as I can tell.
India is very much still struggling with COVID-19, but has over 150,000,000 people vaccinated currently, and is developing brand new DNA vaccines to use. I'm not entirely sure what your source is, but I also doubt you'd believe mine, so we might be stuck there.