Bephenium is primarily used as an anthelmintic agent, effectively treating infections caused by intestinal parasites such as hookworms. It works by paralyzing the parasites, allowing them to be expelled from the body through normal bowel movements. This makes it particularly useful in regions where parasitic infections are prevalent due to poor sanitation or hygiene conditions. It is often administered in oral form, typically as a single dose, making it convenient for mass treatment programs in endemic areas. Its application is crucial in improving public health by reducing the burden of parasitic diseases, which can lead to anemia, malnutrition, and other complications if left untreated.