Safe-Guard Paste Wormer

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Safe-Guard Paste Wormer from Merck is a safe and effective treatment and helps control 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. The apple-cinnamon taste is highly palatable and safe for use in horses, foals, and pregnant mares.



  • Treats and controls cyathostome larvae, strongyles, pinworms, ascarids, and arteritis.
  • Highly palatable paste for hassle-free de-worming treatment.
    Safe for any breed of horse, including foals and pregnant mares.
  • Apple-cinnamon taste 
  • Contains fenbendazole which is the same active ingredient found in prescription dewormers


One syringe will deworm a 1,100 lb horse.


When using Safe-Guard (fenbendazole) Paste 10% concomitantly with trichlorfon, refer to the manufacturer's labels for use, and cautions for trichlorfon. Talk to your veterinarian about any other drugs your pet is taking before starting this medication. Do not use in horses intended for food. The statement required by USDA Safe-Guard (fenbendazole) Paste 10% is approved for use concomitantly with an approved form of trichlorfon. Trichlorfon is approved for the treatment of stomach bots (Gasterophilus spp.) in horses. Refer to the manufacturer's label for directions for use and cautions for trichlorfon.




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