Sulfaguanidine is primarily used as an antibacterial agent, particularly in the treatment of bacterial infections in the gastrointestinal tract. It is effective against certain types of bacteria that cause dysentery and other intestinal infections. The compound works by inhibiting the growth and multiplication of bacteria, helping to control and eliminate infections. It is often administered orally and is known for its ability to remain in the intestines for an extended period, providing localized treatment. Additionally, sulfaguanidine has been explored for use in veterinary medicine to treat bacterial infections in animals, especially those affecting the digestive system. Its targeted action makes it a valuable option for managing specific bacterial conditions in both humans and animals.