Given that the doctors are horses, they're depicting Tucker Carlson dumping Ivermectin intravenously into presumably Ben Garrison (because the cartoon must be a parody of him and his work). The Ivermectin container is labeled "lies," even though an entire body of study exists proving it's efficacy against whatever they're calling COVID19 these days (seasonal flu). You're supposed to believe Ivermectin is and has always only ever been used for horse deworming, and look the other way when presented with evidence to the contrary.