Furazolidone is widely used as an antimicrobial agent in both human and veterinary medicine. In humans, it is primarily employed to treat gastrointestinal infections caused by bacteria and protozoa, such as diarrhea and enteritis. It is particularly effective against infections caused by Giardia and Salmonella. In veterinary medicine, it is used to prevent and treat bacterial and protozoal infections in livestock, poultry, and fish, helping to improve animal health and productivity. Additionally, it is sometimes used as a feed additive to promote growth and prevent disease in animals. Its broad-spectrum activity makes it a valuable tool in managing infections in various settings.