Bephenium hydroxynaphthoate is primarily used as an anthelmintic medication to treat parasitic worm infections, particularly those caused by hookworms. It is effective in eliminating parasites from the gastrointestinal tract, helping to alleviate symptoms such as anemia, abdominal pain, and malnutrition associated with heavy infestations. The compound works by paralyzing the worms, making it easier for the body to expel them. It is commonly administered in oral form, often in a single dose, making it convenient for use in both clinical and field settings, especially in regions where parasitic infections are endemic. Its application is particularly significant in improving public health in developing countries where hookworm infections are prevalent.