1. Ivermectin is the derivatives of abamectin. Ivermectin belongs to semisynthetic broad-spectrum resistant parasites. 
2. Ivermectin has effect for most of the various life cycle nematodes. 
3. Ivermectin has effect for the microfilaria of onchocerca volvulus,but it does not has effect for the adult onchocerca volvulus. 
4. Ivermectin has effect for dung round worms that is only stay in intestinal tract. 
5. Ivermectin has selective inhibition. 
6. Ivermectin can not go through the blood brain barrier of humanbeings.
7.Ivermectin is widely used in gastrointestinal nematodes, lung nematodes and parasitic arthropods of cattle, sheep, horses and pigs, intestinal nematodes of dogs, ear mites, scabies, heartworms and microfilaria, and poultry stomachs Intestinal nematodes and ectoparasites.