Fenbendazole is widely used as an anthelmintic agent, primarily in veterinary medicine, to treat parasitic worm infestations. It is effective against a broad spectrum of gastrointestinal parasites including roundworms, hookworms, whipworms, and certain tapeworms. Commonly administered to livestock such as cattle, sheep, and pigs, it helps improve weight gain, feed efficiency, and overall health by eliminating parasitic burdens. It is also used in companion animals like dogs and cats, especially for treating infections like giardia and intestinal worms. The compound is typically given orally in feed, paste, or suspension form and is valued for its safety profile and minimal side effects at recommended doses. Due to its residual activity and persistence in the environment, it is sometimes monitored in agricultural settings to prevent unintended ecological impact.