10 Best Horse Dewormers 2025 in the United States

Safe-Guard (Fenbendazole) Dewormer Liquid is a solid choice for horse owners looking to manage a variety of intestinal parasites. With its active ingredient, fenbendazole, this liquid dewormer effectively targets common parasites such as stomach worms and lungworms. Its oral drench form makes administration straightforward, which is particularly beneficial for those who may be new to horse care. The product is designed to be used safely with adult horses.

One of the strengths of this product is its extensive spectrum of parasite control, making it a versatile option for horse owners. Additionally, the zero-hour milk discard time for dairy cattle is a significant advantage for those who need to manage both horses and dairy cows. However, it’s essential to keep in mind the residue warnings, such as the slaughter restrictions for cattle and goats. This may limit its use in certain farming operations, especially for those considering the meat and milk production aspects.

While this dewormer comes with clear instructions, it's always wise to consult a veterinarian before starting treatment, particularly for horses with existing health issues or in specific weight ranges. There are no established withdrawal periods for pre-ruminating calves, making it unsuitable for some types of livestock, which could be a drawback for some users.

The Durvet 6 Pack of Ivermectin Paste is a reliable choice for horse owners looking to manage parasite infestations. One of its standout strengths is its broad spectrum of effectiveness against various worms and bots, including large and small strongyles, pinworms, and even lungworms. This makes it particularly suitable for horses of all ages, from young foals to breeding stallions, ensuring safe usage across different life stages. The apple flavor is an added bonus, as it helps reduce resistance and makes administration easier, creating a more pleasant experience for both horse and owner.

However, there are some considerations to keep in mind. While the paste is designed to be easy to use, some horses may still resist treatments regardless of flavor, necessitating additional strategies for administration. Also, being a paste, the dosing might require careful measurement to ensure effectiveness, particularly for horses on the edge of the weight range. Additionally, while it offers effective parasite protection, it does not address all types of parasites, so owners should remain vigilant about their horse's overall health and consider additional treatments if necessary.

The Durvet Ivermectin Paste provides comprehensive parasite control and is user-friendly, making it an excellent choice for horse owners. Just remember to monitor your horse's response and remain aware of the need for occasional resistance management to keep your equine companions healthy.

The Horse Health (ivermectin paste) 1.87% Equine Dewormer is an effective solution for controlling a wide range of parasites in horses, including large and small strongyles, pinworms, ascarids, and bots among others. With ivermectin as its active ingredient, this product is reliable in targeting and eliminating these parasites.

One of its strengths is that it requires only a single dose to remove worms and bots, making it convenient for horse owners. The apple flavor is a thoughtful addition, likely making it more palatable for horses, which can sometimes be finicky about treatments.

Additionally, it is safe to use on all types of horses, including broodmares, stallions, and foals, providing versatility across different horse populations. The dewormer is effective for horses weighing up to 1,250 lbs (600 kg), covering a broad weight range. For those looking for a convenient, single-dose dewormer that covers a wide range of parasites, the Horse Health ivermectin paste is a strong contender.