Pfizer Strongid C2X 10 lb Approved for the prevention of Strongylus vulgaris larval infestation in horses and control of large strongyles (S. vulgaris, S. edentatus); small strongyles (adults and 4th-stage larvae) Cyathostomum spp., Cylicocyclus spp., Cylicostephanus spp., Cylicodontophorus spp., Poteriostomum spp., Triodontophorus spp.; pinworms (adults and 4th-stage larvae) Oxyuris equi; and ascarids (adults and 4th-stage larvae) Parascaris equorum.
