Merck PowerPac Paste Horse Wormer

Merck PowerPac Paste Horse Wormer

Merck PowerPac Paste Horse Wormer is the only FDA approved treatment for all stages of encysted small strongyles. Because strongyles represent up to 90% of a horse’s worm burden, it is important to treat all horses with PowerPac horse dewormer 1-2 times per year.

Each horse treatment contains five 57 gram (double-dose) syringes of Fenbendazole. Administer 1 syringe per 1250 lbs daily for 5 consecutive days. Each gram of paste 10% contains 100 mg Fenbendazole.  Plus, it is apple-cinnamon flavored and easy on your horses taste buds.

The condition referred to as “hay belly” is often an abdomen infested with encysted strongyles. As a result, it may not be properly treated with regular horse deworming. In many climates, the most advantageous times Merck PowerPac Paste Horse Wormer are spring and fall. This eliminates the horse’s worm load before and after exposure to pasture.

This product is ideal for use on horses to control:

  • large strongyles
  • encysted early third stage
  • late third stage
  • fourth stage cyathostome larvae
  • small strongyles
  • pinworms
  • ascarids
  • arteritis caused by 4th stage larvae of Strongylus vulgaris

Have questions about our animal health products? The friendly staff at D&D Feed & Supply is here to help you find the right products. Contact us or visit our local store in Tomball, Texas.


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