Anthelmintic which exhibits vermicidal, ovicidal and larvacidal activity in the treatment of Roundworm (Ascaris lumbricoides), Whipworm (Trichuris trichiura), Pinworm or Threadworm (Enterobius vermicularis), Hookworm (Ancylostoma duodenale and Necator americanus), Strongyloides stercoralis, Taenia solium, Taenia saginata and Opisthorchis viverrini.