Eqvalan Duo Uses For the treatment of mixed cestode (tapeworm) and nematode (roundworm) or arthropod (bot) infestations in horses. The following parasites of horses are sensitive to the antiparasitic effects of EQVALAN DUO: Tapeworms: Anoplocephala perfoliata Large strongyles: Strongylus vulgaris (adults and arterial larval stages) Strongylus edentatus (adults and tissue larval stages) Strongylus equinus (adults) Triodontophorus spp (adults) Triodontophorus brevicauda Triodontophorus serratus Craterostomum acuticaudatum (adults) Adult and immature (fourth-stage larvae) small strongyles or cyathostomes, including benzimidazole-resistant strains: Coronocyclus spp Coronocyclus coronatus Coronocyclus labiatus Coronocyclus labratus Cyathostomum spp Cyathostomum catinatum Cyathostomum pateratum Cylicocyclus spp Cylicocyclus ashworthi Cylicocyclus elongatus Cylicocyclus insigne Cylicocyclus leptostomum Cylicocyclus nassatus Cylicodontophorus spp Cylicodontophorus bicornatus Cylicostephanus spp Cylicostephanus calicatus Cylicostephanus goldi Cylicostephanus longibursatus Cylicostephanus minutus Parapoteriostomum spp Parapoteriostomum mettami Petrovinema spp Petrovinema poculatum Poteriostomum spp Adult hairworms: Trichostrongylus axei Adult and immature pinworms: Oxyuris equi Adult, third- and fourth-stage larvae of roundworms (ascarids): Parascaris equorum Microfilariae of neck threadworms: Onchocerca spp Adult intestinal threadworms: Strongyloides westeri Adult large-mouth stomach worms: Habronema muscae Oral and gastric stages of bots: Gasterophilus spp Adult and immature lungworms: Dictyocaulus arnfieldi