Niclosamide is an anti-helminth drug. It works by inhibiting ATP generation in the mitochondria. ATP which is a major source of energy for cellular organisms is deficient thereby hindering or stopping metabolic processes and then death. Helminths in which Niclosamide is effective against include Pin worm, Round wo,Beef tapeworm( Taenia saginata) etc. The drug is taken orally.
Just like the famous saying "The mitochondria is the power house of the cell" it creates ATP which is energy for the cell. It breaks down glucose to do so and is a key factor in cells