Ivermectin could be dangerous in some instances, like a severe tapeworm infestation. Killing off all of the cysts throughout the body at once can send a person into shock! In less severe cases, the parasitic die off can still be very unpleasant, including diarrhea. Ivermectin could also be completely ineffective for a given condition, potentially delaying necessary treatment.

There, that's the anti-Ivermectin take.