Veterinary medicines (such as antibiotics, antiparasitics, vaccines, hormones, and vitamins) play a pivotal and indispensable role in maintaining animal health and welfare. Their most important functions include: Prevention, such as vaccines that protect against serious infectious diseases and antiparasitics that prevent infection by worms and external parasites. Treatment, such as antibiotics, antivirals, and antifungal drugs to combat diseases, as well as analgesics and anti-inflammatories to relieve pain and suffering. Control, such as drugs that help manage chronic diseases or control the spread of diseases among herds. Enhancing growth and productivity, such as certain drugs that improve feed conversion efficiency.