Used as an antiparasitic agent in veterinary medicine, particularly effective against nematodes and arthropods in livestock. It works by interfering with nerve transmission in parasites, leading to paralysis and death. Commonly used in formulations for cattle, swine, and sheep to control internal and external parasites such as roundworms, lungworms, and mites. Also serves as a precursor in the synthesis of other macrocyclic lactone drugs like milbemycin oxime, which are used in pet and agricultural applications. Its high potency allows for low-dose treatments, reducing environmental impact and residue concerns.