Sulfalene is primarily used as an antibacterial agent, particularly in the treatment of malaria. It belongs to the sulfonamide class of drugs and works by inhibiting the growth and reproduction of the malaria parasite. It is often combined with other antimalarial medications, such as pyrimethamine, to enhance its effectiveness and reduce the risk of resistance. Sulfalene is especially useful in regions where malaria is endemic, providing a cost-effective and accessible treatment option. Additionally, it has been employed in the management of certain bacterial infections, though its use in this context is less common compared to its antimalarial applications.