Jeffers Ivermectin Horse Dewormer, Single Dose

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Jeffers Ivermectin Horse Dewormer, Single Dose

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Jeffers Ivermectin (1.87%) is a broad spectrum horse dewormer used to aid in the control of large & small strongyles, pin worms, lung worms, roundworms and bots. Single Dose Read More

This product is currently unavailable for purchase.

Featured Advice from Our Experts

What You Should Know About Horse Worms: Treatments, Causes & Info

Common types of worms and a description of each plus what to use to deworm when (printable rotation chart in link at bottom.)


Jeffers Ivermectin Horse Dewormer (1.87%)

Jeffers Ivermectin is currently experiencing production delays due to unavailable raw materials. While this product is on long-term backorder, Jeffers offers a new Ivermectin Paste with the same active ingredient (see MAA9).

Limit 2 per customer.

Due to recent articles regarding Ivermectin and the Coronavirus, we are limiting orders to 2 per customer unless you have ordered Ivermectin from Jeffers before. If you have ordered Ivermectin previously, don't worry. Your order will be processed as normal.
This product is intended for animals only.

A broad spectrum dewormer for horses used to aid in the control of large & small strongyles, pinworms, lungworms, roundworms, bots and more. This new gel formula treats up to 1250 lbs in body weight, kills internal parasites and helps control 46 species and stages of worms and bots.

Aids in the Control of:

  • large and small strongyles
  • pinworms
  • hairworms
  • threadworms
  • stomach worms
  • lungworms
  • roundworms

All horses should be included in a regular parasite control program with particular attention paid to mares, foals, and yearlings. Foals should be treated at 6-8 weeks of age and routine treatment repeated as needed. Consult a veterinarian for a control program to meet specific needs.

Note: May be used in horses of all ages, including mares at any stage of pregnancy. Stallions may be treated without adversely affecting their fertility.

View manufacturer and label information

Any use of a product that is not clearly defined on the label directions should be done only under the supervision of a qualified veterinary professional.


  • Brand: Jeffers
  • Active Ingredient: Ivermectin (1.87%)

Reviews (127)

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  1. 5.0 out of 5 stars

    "Effective and Affordable"

    Ivermectin is a great product and Jeffers makes it very affordable! Thank you Jeffers!!!

  2. 5.0 out of 5 stars

    "Great flavor "

    According to the horses .They seem to not mind the flavor

  3. 5.0 out of 5 stars

    "Affordable & it works"

    Used this for many years with my seasonal rotation it’s affordable and it works on all size horses, my drafts require two tubes and at this price you can’t go wrong. Jeffers as always excellent product, fast shipping & worth paying the exchange rate.

  4. 5.0 out of 5 stars

    "Jeffers Dewormer"

    A great inexpensive way to keep horses dewormed without paying high retail prices from other brands of dewormer. Plus it works great!

  5. 5.0 out of 5 stars

    "Jeffers Ivermectin"

    Have been into showing and breeding horses 55 plus yrs. Never used any other type of wormer in my program. My horses worked well, foaled easy and bred... all with no problems. Barn babies as well as pastured horses. Great prices is a super bonus!

  6. 5.0 out of 5 stars

    "It works"

    The price is good and the product really works

  7. 5.0 out of 5 stars

    "Used it for years now"

    It's affordable, it does the job, it's easy to administer. I use it for horses and dogs and may for others after doing some research.

  8. 5.0 out of 5 stars


    Have used for years. No problems. love the low price.

  9. 5.0 out of 5 stars

    "Love this"

    I love this dewormer. Price is right and great product.

  10. 5.0 out of 5 stars

    "Good product at a great price"

    Have bought the Jeffers prooduct for years and use it regularly. I combine it with Quest Plus to boost the power of the quest after 30 days.

  11. 5.0 out of 5 stars

    "Ivermectin horse wormer"

    Great stuff! I use it on horses and dairy goats. Works great! Great value.

  12. 5.0 out of 5 stars

    "Can’t beat the cost!"

    I administered this to all my horses and even the picky ones liked it. So easy and the best deal! I’ve already restocked. Thanks Jeffers

  13. 5.0 out of 5 stars

    "Inexpensive and Effective"

    A good dewormer to include in your arsenal against internal parasites.

  14. 5.0 out of 5 stars


    All products are great, arrived on time love shopping with Jeffers.

  15. 5.0 out of 5 stars

    "Great Product!"

    I always use this product in my dewormer rotation for my horses. Easy to order and receive. Very great price, too!

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