Ivermectin is a fast acting drug to treat a variety of parasitic infections. It is an anti-parasitic remedy for patients suffering from a parasitic disease of the intestinal tract, skin or eyes.Iverheal 12 mg is an oral drug for the treatment of infections or parasite attacks. Doctors prescribe these drugs for scabies and heartworm patients. These are parasitic diseases that are produced by external attacks. Scabies are tiny parasites that come from people with itchy mites. Filariasis is also the cause of a mosquito-borne infection.