7 Best Wormer For Horses in 2021 – Reviews & Top Picks

As an Amazon Associate I earn from qualifying purchases. We will receive a small commission at no additional cost to you and be incredibly grateful.

Wormer For HorsesAs our equestrian buddies on the field, on the racetrack, or a simple ranch, horses do get parasites like most pets and animals. That’s why we wrote this article if you are looking for a wormer for horses to help improve their health.

Horse worming is done similar to dog and cat deworming, which is mostly in their foal stage although rotational worming is also done for older horses. Many formulas out there are also okay to be used for pregnant mares.


Best Horse Wormer Reviews

Here are our top picks for the best wormer for horses:

1. Ivermectin Paste Dewormer – 6.08g dose

Something that your equestrian friend will love is the Ivermectin Paste Dewormer – 6.08g dose. This wormer for horses is an oral paste that has an apple flavor so it won’t be difficult to feed your buddy. In addition to that, it is at 1.87% for a single dose so it will get rid of most worms and bots in one go.

This oral paste for horses is an anthelmintic and boticide that is approved by the FDA. It will treat up to 1,250 lbs. of horse body weight with its 6.08-gram dosage. Among the different parasites that can be removed by this wormer for horses include large strongyles, small strongyles, ascarids, pinworms, hairworms, intestinal threadworms, lungworms, summer sores, neck threadworm, and the like.

We like that this wormer can be used for horses of all ages, which also include mares at any stage of pregnancy and it won’t affect their fertility, especially with stallions.


  • Ideal for horses of all ages
  • Safe for pregnant mares
  • Has an apple flavor
  • Has a wide spectrum


  • Some owners might not like the smell
  • Minor shipping problems


2. Bimeda Equimax Horse Wormer Ivermectin

Coming in a pack of 3, the Bimeda Equimax Horse Wormer Ivermectin is a complete set of tube paste wormer for horses. This one comes with its syringe for making it easy to administer to your horse. As with most wormers, it has 1.87% Ivermectin plus 14.03% Praziquantel that is ready to be used.

As an oral administering paste, it is an anthelmintic and boticide that will treat and control roundworms, tapeworms, and bots in horses using a single dose only. Unlike the previous pick, this one is only for horses that are 4 weeks old and above. Nonetheless, lactating and pregnant mares, as well as stallions, can use them safely.

Approved by the FDA, this paste contains 6.42 grams of horse wormer and will also get rid of ascarids, lungworms, and strongyles. What’s more, it will also get rid of hairworms, intestinal threadworms, large-mouth stomach worms, and small strongyles. The dose can be administered to the horse at 1.5 mg per kilogram of body weight. The syringe plunger has a capacity of up to 220 lbs. of body weight per marking.


  • Wide spectrum formula
  • Doesn’t affect pregnant mares
  • Okay for stallions without affecting fertility
  • Comes with its syringe


  • Not for all horse ages
  • No tasty flavor


3. Pfizer Strongid Dewormer Paste for Horses

If you are a fan of big-name brands for medicine, you will like the Pfizer Strongid Dewormer Paste for Horses. Among the parasites, it can kill and take care of include strongyles such as the Strongylus Vulgaris, S. edentatus, S. equinus, as well as pinworms, and large roundworms, even in ponies other than horses.

As a wormer for horses that comes in a paste form, this one is okay to use for horses and foals from 2 to 8 months of age. This makes it a great wormer for horses that are still young. The paste contains 23.6 grams of FDA-approved equine anthelmintic that will easily remove parasites from your horse.

There is a simple chart that will help you figure out how much volume you should put on the syringe from horses 300 pounds up to 1,200 pounds or more, as well as the Pyrantel Base milligram. As a general rule, it has a weight mark that has a recommended dose for up to 300 pounds of weight.


  • Can get rid of many worm types
  • Ideal for younger horses
  • Ideal for heavier horses
  • Comes with its syringe


  • Picky horses might not like the taste
  • Doesn’t eliminate bots



Yet another flavored wormer for horses, the SCHERING/INTERVET D PANACUR Dewormer Horse Paste is a 10% fenbendazole equine dewormer that is easy to administer to your pet/buddy. Each pack has 100 mg of dewormer paste and we like that it has a distinct apple-cinnamon liquid flavor. This would be helpful for horses that do not like getting fed with bland-tasting wormers or food.

As with most wormers for horses out there, it comes with its syringe that is ready to be administered. In addition to that, it has a variety of targeted parasites, such as the Strongylus edentatus S. equinus S. Vulgaris, which are all part of the large strongyles family. Likewise, it will also take care of cyathostome larvae small strongyles pinworms when it comes to the 3rd and 4th stage deworming.

In addition to that, stomach bots will also be eliminated with this paste solution. A pea-sized paste will do just fine for horses that are infested with hookworms and roundworms.


  • Can kill bots and strongyles
  • Has an apple-cinnamon liquid flavor
  • Comes with its syringe
  • Great for rotation worming


  • No warning or indication if okay for mares
  • No guidelines if administering for younger horses


5. Intervet Safeguard Dewormer Pellets for Horses

If your horse is picky with syringe-type wormers, you might like the Intervet Safeguard Dewormer Pellets for Horses. This wormer for horses is a pellet-type that your horse will find easy to chew and you’ll find easy to feed to them. Each pack contains 1.25 pounds of dewormer pellets that are based on alfalfa so it is made of natural ingredients. If you are into rotational deworming then this is a good choice for you.

Among the ingredients include 0.5% fenbendazole, aside from the alfalfa. Each pouch will treat a single horse with 1,250 pounds of body weight. Because it is safe for all horses, including pregnant mares and foals, it will be a breeze for those with multiple horses in their stables.

Adding to that, it will take care of the most common parasites in horses, such as large strongyles, pinworms, small strongyles, and ascarids. Since it is made in the USA by Merck & Co. Inc., it is a quality-made wormer for horses.


  • Safe for pregnant mares
  • Safe for foals
  • Made with natural alfalfa
  • Easy to feed to horses


  • May not kill tapeworms
  • May not get rid of bots


5. Zoetis Quest Gel 14.4gm

The Zoetis Quest Gel 14.4gm is a wormer for horses that comes in a gel form that’s administered using a syringe. It is also a boticide so it won’t just kill or get rid of worms as it is a wide-spectrum gel. In addition to that, it will reduce eggs to minimize bioburden on your horse pasture.

Each syringe comes with 11.3 grams or 0.4 ounces of moxidectin gel that’s ready to be used for horses. It will get rid of strongyle larvae and eggs while the SURE-DIAL design of the syringe makes it applicable for beginners. Made in the USA, this horse wormer can take care of up to 1,500 pounds of horse weight in 50-pound increments.

Unlike paste formulas, this one is a gel so it is easy to dissolve into the mouth of the horse. This makes deworming a simpler process for those who have to fight their horse to give their medicine. It is slightly pricier than paste-type syringe formulas but worth it if your horse is difficult to feed.


  • Gets rid of both bots and worms
  • Can be used on heavier horses
  • The gel formula is easy to dissolve
  • Made in the USA


  • On the pricier side
  • No indication whether it’s safe for mares


6. First Companion Pyrantel Paste Strongid Horse Wormer Parasite

Another easy-feed for your horse is the First Companion Pyrantel Paste Strongid Horse Wormer Parasite due to the apple flavor. Because it is apple-flavored, it won’t be yucky to the horse that is a picky eater, especially if they are so difficult to feed and you have to wrestle them for it.

Among the many parasites that this formula will take care of including large strongyles, large roundworms, small strongyles, and pinworms. This paste-type equine anthelmintic is an oral dosage that contains 23.6 grams per pack/syringe.

Horses that need to be dewormed and are 2 to 8 months old can be administered with this FDA-approved formula. It is also applicable for rotational worming every 4 weeks and contains 43.9% pyrantel pamoate. Since the company that manufactured it is from Ontario, Canada, you can be assured of its quality. Every single dose is 3 mg per pound of weight, which can treat up to 1,200 pounds of horse per syringe.


7. Farnam Equine Dewormers

A bigger set of parasite-killing paste would be the Farnam Equine Dewormers. This wormer for horses is made with ivermectin paste at 1.87%, which is ideal for a single dose worming process. Because it has a red apple flavor, your horse will most likely be easy to feed with it. Added to that, it is both an anthelmintic and a botcide so it will not just take care of worms but also bots.

Likewise, it has a unique design for the syringe, which has a sure-grip mechanism that will make feeding much better with greater control, especially if you need to wrestle your horse to get them dewormed. Because it is made in the USA, you will be sure of the quality of this horse wormer.

Each pack of paste will treat up to 1,500 pounds of horse. We like that this is a broad-spectrum control paste that will take care of up to 31 or more species and stages, which include larvae, large and small strongyles, stomach worms, hairworms, bots, roundworms, pinworms, lungworms, and intestinal threadworms.


  • The twist measuring system avoids overdose
  • The sure-grip mechanism for the syringe
  • Red apple flavor
  • Wide or broad spectrum


  • Not indicated if applicable for pregnant mares
  • May not work on tapeworms


Things We Considered Before Buying

Here are the things to look for when you want to choose the best wormer for horses:

  1. Active ingredient. Among the most common active ingredients in a wormer for horses include fenbendazole and ivermectin. Always take note of the dosage so that you know you are not giving too much to your horse. It is best to consult a vet for this.
  2. The parasites it can eliminate. Parasites, such as large strongyles, small strongyles, pinworms, and the like are often removed by these formulas. Some may even take care of bots.
  3. Administering format. Many wormers for horses come in syringe forms (paste or gel) but there are also pellet-type ones.
  4. Flavors, if any. Apple flavor, as well as apple-cinnamon flavors, are common add-ons to the wormer for horses to help them easily take it in and so that you don’t have to wrestle for it.
  5. Life stage. The majority of wormers for horses out there are applicable for all life stages but it doesn’t hurt to read the labels. Most are even okay for pregnant mares. Some may only be applicable for younger horses or foals so make sure you know what you are feeding to your horse.


In the long run, a wormer for horses will help restore their health so that they won’t be prone to digestive diseases and the like. It is also an important part of growing up, much like how we deworm dogs and cats. We hope you liked our top picks for the best wormers for horses!