This is a great article about Ivermectin from NPR.
"Smith felt the hospital had given up on her husband, but she could not, according to the complaint. After doing research on the internet, she sued the hospital to require it to treat her husband with ivermectin — an inexpensive anti-parasitic drug that’s been used to cure animals and people from worms and lice since the 1980s… Meanwhile, some people are overdosing on ivermectin. While the drug is generally considered to be safe in doses approved for human use, many who are taking it as an unproven treatment for COVID-19 are using more than the typically prescribed amount, says Michael Ganio of the American Society of Health System Pharmacists, or using concentrated forms meant for livestock. And that has prompted warnings from U.S. federal agencies.
Bristow says the research community is devoting more time and resources to studying this drug, compared with other treatments, because of the immense interest around it. As was the case with hydroxychloroquine, though, she cautions that interest in the drug may be driven more by ideology than science.
U.S. health authorities and most doctors do not recommend using it to prevent or treat COVID-19, citing a lack of clear evidence on whether the drug works. Yet myths and beliefs around the drug have taken on a life of their own, fueled by a small group of doctors whose views diverge from the medical consensus, by right wing commentators and by internet groups where people share tips on sourcing and dosing."