Deworming is an integral part of a horse’s health. Both internal and external parasites are a threat to your horse’s health, so it is important to take precautionary measures to protect their health. There are a variety of dewormers on the market, but some work better than others. The following article reviews some of the best dewormers for horses available.
- Durvet Ivermectin Dewormer Paste is the best value for your money.
- Durvet Ivermectin Dewormer Paste – Best for Horses of All Ages.
- Schering/Intervet D Panacur Dewormer Horse Paste – Best for Treating Strongyloides.
- Merial Zimecterin Gold Dewormer Paste – Best for Treating Tapeworms.
- Zoetis Quest Gel – Best for Six-Month-Old Horses.
- Pfizer Strongid Dewormer Paste – Best for Infections in Adults.
Our Top Overall Pick
- Durvet Ivermectin Dewormer Paste is our pick based on value, durability and utility.
|Durvet Ivermectin Dewormer Paste||Check Price|
|Schering/Intervet D Panacur Dewormer Horse Paste||Check Price|
|Merial Zimecterin Gold Dewormer Paste||Check Price|
|Zoetis Quest Gel||Check Price|
|Pfizer Strongid Dewormer Paste||Check Price|
Top 5 Best Wormer for Horses
1. Durvet Ivermectin Dewormer Paste – Best for Horses of All Ages
- Has an apple flavor that horses love
- Easy to inject in an animal’s mouth as it comes in a plastic syringe with one dose
- Can kill parasites that are harmful to young horses
- Safe for pregnant mares and breeding stallions
- Each syringe contains 1.87% ivermectin
- Price: Check Price
Durvet Ivermectin is a dewormer that your horse will love because of its apple flavor. Anthelmintics (dewormers), when used accurately, are effective, but some worms have developed resistance against the dewormers. They need to use the dewormers according to horses’ ages, but ivermectin dewormer is for all age horses, foals, and pregnant mares. 6.8gm of this paste can treat up to 1250lb of horse bodyweight.
Treat your horse with Durvet Ivermectin Dewormer as it gives effective control over pinworms, bots, intestinal threadworms, large and small strongyles, lungworms, summer sores, and dermatitis in horses.
- Helps reduce parasites in your horse
- Safe for breeding and pregnant mares
- May cause dizziness and headache
- Nausea and vomiting may occur in severe infections
2. Schering/Intervet D Panacur Dewormer Horse Paste – Best for Treating Strongyloides
- Deals with gastrointestinal worms and bots
- Only licensed vets can use this
- Comes in a syringe
- Each pack contains 100mg of paste
- It contains trichlorfon, which is used for the treatment of bots
- Price: Check Price
Schering/Intervet D Panacur is another apple-flavored dewormer. It is best for those horses who don’t like the dreary taste of dewormers. Panacur contains an active anthelmintic, 10% fenbendazole used to target varieties of parasites as Strongyloides, which are gastrointestinal. Large strongyles (strongyles edentates), S.equinus, S. Vulgaris), coop up an early third stage and fourth stage, and small strongyles like pinworms, ascarids, and arthritis caused by the fourth stage of Strongylus Vulgaris in horses.
It comes with a syringe that is ready to administer. Moreover, use the paste according to the recommended dose based on the bodyweight over the appropriate period.
- Safe treatment without any effect on reproduction
- Kills a variety of parasites that keep your animal healthy
- Has an apple cinnamon flavor
- Contains 100mg paste in each syringe and still cheap
- Loose stool has been reported
- Some horses don’t like apple flavor
3. Merial Zimecterin Gold Dewormer Paste – Best for Treating Tapeworms
- Controls gastrointestinal cestodes
- Untested on foals younger than two months
- Not suitable for mares near breeding or pregnant and lactating mares
- Easy to administer
- Price: Check Price
Horse wormer from Merial contains 1.55% ivermectin and 7.75% praziquantel; this combination provides a wide range of parasite control for horses. This reputable brand is FDA approved and can kill around 61 species of parasites. As it has not been tested yet on pregnant mares and mares near breeding, it’s better to avoid this product in those cases.
Praziquantel is very useful in treating worms as it prevents insect larva from multiplying in your body. It is used to treat infections caused by Schistosoma worms entering the body via contaminated water.
This dewormer paste can control tapeworms and large and small strongyles, including benzimidazole-resistant, pinworms, ascarids, hairworms, stomach worms, bots, lungworms, and threadworms.
- Licensed in the US for the control of tapeworm
- Has sufficient paste to treat a 1250lb horse
- Six packs are enough to treat multiple horses
- A broad spectrum parasitic agent
- Swelling, irritation of the mouth, lips, and tongue reported
- Adverse effects if water and ground is contaminated
- Not safe for all horses
4. Zoetis Quest Gel – Best for Six-Month-Old Horses
- In gel or ointment form
- Contains 0.4 ounces of moxidectin
- Useful for controlling parasites and worms in horses
- Syringe has a sure-dial design, easy to use for beginners
- Price: Check Price
Horse wormer from Zoetis contains two active pharmaceutical ingredients: 20mg moxidectin and 125 mg praziquantel. It is only for oral use of horses of 6 months and older. As it comes in gel form, it is effortless to use for the people who have to fight with their horses while giving medicine. This gel is a little expensive but worth it.
It is not just a worm killer but also a pesticide and a broad spectrum gel that controls ascarids, botflies, hairworms, bots, tapeworms and strongyles, large and small strongyles, larvae, etc. Quest gel is an FDA-approved product to control the production of small strongyle eggs, and a study showed egg repression continued for 84 days. Before giving a dose to your horse, find out the horse’s weight or otherwise consult a vet.
- Gel packed in ready to use syringes
- Can kill many species of worms
- FDA approved
- Dissolves easily
- Overdose may result in a serious problem
- May irritate the eyes
- A bit more expensive than other pastes
5. Pfizer Strongid Dewormer Paste – Best for Infections in Adults
- Each syringe contains 3.6g pyrantel in 23.6gm paste
- Best for horses and foals from 2 to 8 months
- An FDA-approved anthelmintic
- Price: Check Price
If you are a brand conscious person, then Pfizer is the best dewormer for you. It is used to treat adult infections of large strongyles such as Vulgaris, S. edentates, S. equinus., Small strongyles (oxyuris, parascaris).
A pale yellow paste contains 44.9% of Pyrantel pamoate. Pyrantel is a tetrahydro pyrimidine used specifically in horses to control roundworms and tapeworms, but it is not effective on organs like the lungs and skin. Knowing the weight of your pet before giving a dose is important. The weight recommended for this product is 300 pounds.
- Comes in a syringe
- Perfect for young and heavier horses
- An effective equine wormer that can kill varieties of worms
- Does not protect against reinfections
- Doesn’t remove bolts
Type of Worms
If you find your horse sick, then consult a vet first to know the worm that has infected it so that you can select a wormer accordingly.
The most common worms found in horses are:
PinwormsIt is not an intestinal worm; there is no serious threat to horse health. But it can cause itching and irritation and is hard to get rid of as its life cycle is quite long; it’s not easy to move out of this disease. It takes almost five months to get matured. This worm is not passed in the feces like other worms. A sticky fluid can be seen on the horse’s rectum or tail, which contains eggs.
TapewormsTapeworms are not that harmful to horses. These worms come in contact when horses ingest mites on the plants. These worms stay in the small intestine, depending on the food coming to them. Vomiting, nausea, restlessness, and irritation in the stomach are common symptoms.
RoundwormsRoundworms or ascarids are dangerous as they move in the blood and then come in contact with the lungs and liver. Larva from the lungs then moved towards the small intestine and began to nurture there. When it passes from the lungs, horses may suffer from respiratory diseases.
Blood WormsBloodworms, often called Strongyloides, are ingested when horses are grazing. Eggs may hatch on the grass, and horses can end up swallowing them. Young and older horses are usually susceptible to small strongyles; larva may embed in the intestine and cause weight loss, diarrhea, and colic. At the same time, large strongyles can destroy abdominal artery walls.
ThreadwormsThreadworms can be treacherous to young horses. Threadworms are like pinworms, 13 millimeters long and live in the intestine, and are found around the anus. Baby horses may be infected by feeding on a mother horse. These parasites may cause restlessness, feebleness, and vomiting in young horses.
BotsBots are tiny flies like honeybees; they stick their nits on the body hair of horses. Horses can injure themselves by scratching when new eggs are hatched. Bots then enter into the mouth. They remain in soft tissues, lips, gums, and tongue for 2 to 3 weeks and then migrate to the small intestine.
Type of Medicine
There are different types of medicines to treat different parasites. No single dewormer can kill all parasites.
Moxidectin PasteThis medicine prevents all kinds of small and large strongyles, including pinworms, roundworms, and bots.
PraziquantelThis is just like moxidectin. Both of these drugs are common in dewormers.
Pyrantel PamoateThis drug can remove pinworm and hookworm especially.
FenbendazoleThis provides continued protection against small and large strongyles, pinworms, and ascarids.
Dosage & Horse’s Weight
Every horse must be dosed with an appropriate amount of wormer according to their body weight. An inadequate dose is not effective. You can estimate your horse weight by weight tape. Usually, a single syringe contains medicine for a 1200-pound horse, but if you think your horse has more weight, then you need an extra syringe. As these wormers are not harmful, you can use an extra syringe. In the case of a young foal, an overdose may cause a problem. So consult a vet before giving a dose to a young horse.
Sometimes, the medicine may come out of the horse’s mouth and on the ground. It would not be effective if the horse does not swallow a full dose. In this case, you have to wait for a few days and then start with a new plan.
Horses are dewormed according to their age. Make sure that pregnant and young foals are wormed regularly. Young foals should be wormed at 1 to 2 months of age. And treatment should be repeated after every 30 to 60 days. Pregnant mares are also wormed of roundworms but be careful while treating pregnant mares (make sure that the product is safe to use).
On adults worming once or twice a year is enough. Larvae cannot survive in summer and winters, so worming in spring and autumn is a sensible decision.
Dewormers for horses come in granules, powder, paste, and gel form. And the dosage is marked on it according to the weight of the horse. Before giving any dosage, make sure there is no food in the horse’s mouth; you can check it by pushing its lips on the opposite side with the help of your finger.
Frequently Asked Questions
What is the best dewormer for horses?
All are good dewormers, but dewormers in paste and gel form are better than the granules because paste and gel can absorb easily in the horse mouth.
When should horses be wormed?
Horses should be wormed according to their age. Adult horses should be wormed once or twice in a year when larvae are most infected in the environment, and young foals should be wormed frequently. Horses with higher shedding eggs will need to be wormed more regularly to control the worms.
Which wormer kills roundworms in horses?
Pfizer Strongid Dewormer contains 43.9% Pyrantel Pamoate, which specifically controls roundworms.
Which wormer kills pinworms in horses?
Among all dewormers, fenbendazole and ivermectin are the most common ingredients used to kill pinworms.
Which wormer kills tapeworms in horses?
Zimecterin Gold Dewormer Paste combines ivermectin and praziquantel, which specifically controls tapeworm. If praziquantel is not present in dewormer, ivermectin alone can also cure it.