Broad spectrum horse wormer. Large strongyles (Strongylus sp.), small strongyles (Cyathostomes), large roundworm (Parascaris equorum) and pinworm (Oxyuris equi) in horses. Good activity has also been demonstrated against tapeworm (Anoplocephala perfoliata) and lumen dwelling immature forms of Trichonema sp., Triodontophorus sp. and Strongylus vulgaris.