Mebendazole is used to treat infections caused by worms. It works by keeping the worm from absorbing sugar (glucose), so that the worm loses energy and dies. This medicine is available only with your doctor's prescription.

Triclabendazole, including the Triclabend 500 mg tablet, is an anthelmintic medication primarily used to treat fascioliasis, an infection caused by the liver fluke parasite Fasciola hepatica. It's effective against both adult and immature stages of the fluke. This medication is often prescribed for individuals who have ingested contaminated water plants or have eaten animals that have eaten such plants. 

Diethylcarbamazine is used to treat parasitic worm infection and filariasis (elephantiasis). Filariasis is a disease in which swelling of arms, legs or other body parts may occur. Diethylcarbamazine is used to treat Bancroft's filariasis, eosinophilic lung, loiasis and river blindness (onchocerciasis).