Administer Orally At The Rate Of 2.3Mg/Lb. One Syringe Will Deworm A 2500Lb Horse. For Foals And Weanlings The Recommended Dose Is 4.6Mg/Lb One Syringe Will Treat A 1250 Lb Horse.For The Control Of Large Strongyles Encysted Early Third Stage Late Third Stage And Fourth Stage Cyathostome Larvae Small Strongyles Pinworms Ascarids And Arteritis Caused By Fourth Stage Larvae Of Strongylus Vulgaris In Horses.Fenbendazole - 10%