Fenbendazole is a broad-spectrum anthelmintic medication primarily used to treat parasitic infections in animals, particularly in dogs, cats, and livestock. It works by inhibiting the metabolism of parasites, leading to their death and elimination from the host's body. In addition to its veterinary uses, Fenbendazole has gained attention for its potential effects in human medicine, particularly in cancer research. Some studies suggest it may have anti-cancer properties, but more research is needed to fully understand its efficacy and safety for human use.