What Is Ivermectin? Ivermectin 12 mg is a medication originally discovered from a soil microorganism in the 1970s. It’s widely used to treat parasitic infections in humans, such as strongyloidiasis (intestinal roundworm) and onchocerciasis (river blindness), as well as scabies and lice. It belongs to a class of drugs called antiparasitics and has been used…