Closantel sodium is widely used in veterinary medicine as an antiparasitic agent, particularly effective against liver flukes and ectoparasites in livestock such as sheep, cattle, and goats. It works by disrupting the energy metabolism of parasites, leading to their death. The chemical is commonly administered orally or through injection, providing long-lasting protection. It is also utilized to control parasitic infections like Haemonchus contortus in ruminants, improving animal health and productivity. Additionally, closantel sodium is sometimes employed in combination with other anthelmintics to enhance its efficacy and broaden its spectrum of activity against resistant parasite strains.