QUEST Plus Equine Oral gel is an FDA-approved broad-spectrum equine dewormer. This horse dewormer contains both praziquantel and moxidectin for horses and helps suppress production of small strongyle eggs for 84 days. QUEST Plus is approved for the removal and control of large strongyles Strongylus vulgarisS. edentatus, Triodontophorus brevicauda, T. serratus, small strongyles Cyathostomum spp., Cylicocyclus spp., Cylicostephanus spp. Gyalocophalus capitatus encysted cyathostomes; Ascarids Parascaris equorum, pinworms Oxyuris equi, hairworms Trichostrongylus axei, largemouth stomach worms Habronema muscae, stomach bots Gasterophilus intestinals, G. nasailis tapeworms Anaplocephala perfoliate. Quest Plus wormer is safe to use in breeding mares and stallions.