How effective is ivermectin when used against human parasites? Human cases of scabies and lice much of the time answer well to ivermectin treatment, notwithstanding, it’s less commonplace to treat illnesses, for instance, pinworms and hookworms with the drug considering its optional impacts. Ivermectin has a couple of foes of parasitic purposes in people, in any case, it isn’t comprehensively supported by experts since there are safer, all the more remarkable meds accessible.