Pyrantel Paste Horse Wormer is for the removal and control of mature infections of large strongyles (Strongylus vulgaris, S. edentatus, S. equinus); small strongyles; pinworms (Oxyuris equi); and large roundworms (Parascaris equorum) in horses and ponies. Contents of each syringe will treat up to 1200 lb. body weight. Apple flavor.