evidence: For months, conservative media – including Fox News hosts Tucker Carlson, Sean Hannity, and Laura Ingraham – have talked about how it could be used to treat Covid-19. It’s a popular topic on Twitter. Ivermectin has been called a "miracle drug" in congressional hearings. Even Wisconsin Republican Sen. Ron Johnson has been touting its benefit to treat Covid-19 cure. [...] The US Food and Drug Administration has cautioned people against using ivermectin to treat Covid-19. Last Saturday the FDA tweeted: "You are not a horse. You are not a cow. Seriously, y’all. Stop it." [...] The CDC reminded doctors that ivermectin is not authorized or approved for use in Covid-19 patients. Doctors did investigate the possibility, but clinical trials of the drug "yielded insufficient evidence" to treat Covid-19. Scientists would need to perform more clinical trials to see if it actually worked to treat the disease. Overdoses of the drug can cause stomach problems, nerve damage, seizures, disorientation, coma and death.