Animal ivermectin is not dangerous for humans unless the dose is inaccurate.
Accurate, appropriate dosing and potentially toxic ingredients to humans would be the problem.
People have been using animal meds for a long time, as they are the same as for humans. Human meds also work for animals.
Wrong! The doctor I talked to at Kaiser said under no circumstances should the animal form of ivermectin be used by humans. I ask for you to talk that idea over with your doctor.