Pyrantel pamoate is a widely used anthelmintic (deworming agent) in equine medicine, effective against various internal parasites. Understanding its uses, proper dosage, and addressing common questions can help ensure the health and well-being of your horse. So, lets find how to properly use Pyrantel Pamoate for Horses.
- Class: Tetrahydropyrimidine anthelmintic.
- Mechanism of Action: It works by paralyzing the nervous system of the parasites, leading to their expulsion from the horse’s digestive tract.
What Does Pyrantel Pamoate Treat in Horses?
Pyrantel pamoate is effective against several equine parasites, including:
- Large Strongyles (Strongylus vulgaris): These parasites can cause significant damage to the horse’s intestines and blood vessels.
- Small Strongyles (cyathostomes): Common in horses, they can cause colic and weight loss.
- Roundworms (Parascaris equorum): Primarily affect young horses, leading to digestive issues.
- Pinworms (Oxyuris equi): Cause itching around the anus, leading to tail rubbing.
- Tapeworms (Anoplocephala perfoliata): At double the standard dose, pyrantel pamoate can effectively treat tapeworms.
Formulations
Pyrantel pamoate for horses is available in several forms:
- Paste: Administered orally using a syringe.
- Pellets: Mixed with feed for easy administration.
- Liquid Suspension: Occasionally used, especially in younger animals.
Dosage Chart for Pyrantel Pamoate in Horses
Accurate dosing is crucial for effectiveness and safety. The dosage depends on the horse’s weight. It is important to calculate the correct weight of the horse to ensure effectiveness and avoid under-dosing. The standard dosage is 3 mg per pound (6.6 mg per kilogram) of body weight. For tapeworms, a double dose is recommended.
For tapeworms (Anoplocephala): Double the standard dose (6 mg/kg).
Horse Weight (lbs) | Horse Weight (kg) | Standard Dose (mg) | Tapeworm Dose (mg) |
500 | 227 | 1,500 | 3,000 |
600 | 272 | 1,800 | 3,600 |
700 | 318 | 2,100 | 4,200 |
| 800 | 363 | 2,400 | 4,800 |
| 900 | 408 | 2,700 | 5,400 |
Note: Always consult with a veterinarian before administering any medication.
Administration and Precautions
- Ensure the horse swallows the medication fully.
- Use a weight tape or scale to estimate the horse’s weight accurately.
- Do not administer to horses that are debilitated without consulting a veterinarian.
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Side Effects
Generally safe when used at recommended doses.
- Gastrointestinal Upset: In rare cases, mild gastrointestinal upset may occur.
- Lethargy: In some cases, horses may experience mild lethargy or fatigue after deworming, but this is typically temporary and resolves with rest.
- Allergic Reactions (Rare): Although rare, some horses may develop allergic reactions to pyrantel pamoate, which can include symptoms such as hives, swelling, or difficulty breathing.
- Colic (Mild): Mild colic may occur in certain horses following deworming, but it usually resolves within a short period with appropriate monitoring and care.
- Behavioral Changes (Rare): In rare instances, horses may exhibit behavioral changes such as increased irritability or restlessness after deworming, which typically resolve on their own.
Resistance Concerns
- Resistance to pyrantel pamoate can develop, especially in small strongyles. Rotating dewormers and using fecal egg count reduction tests (FECRT) are critical to monitor effectiveness and minimize resistance.
Veterinary Guidance
Always consult a veterinarian for:
- A customized parasite control program.
- Determining the appropriate deworming schedule based on your location, horse population density, and grazing habits.
Frequently Asked Questions (FAQs)
- How Much Pyrantel Pamoate Suspension for Adult Horse?
The dosage is 3 mg per pound (6.6 mg per kilogram) of body weight. For tapeworms, administer a double dose.
- Will Pyrantel Pamoate for Horses Kill Tapeworms?
Yes, when administered at double the standard dose, pyrantel pamoate is effective against tapeworms.
- Which Is Better: Pyrantel Pamoate or Fenbendazole for Horses?
Both are effective against different parasites. Fenbendazole is effective against small strongyles and roundworms, while pyrantel pamoate targets large strongyles, pinworms, and tapeworms. Consult your veterinarian to determine the most appropriate treatment.
- What Does Pyrantel Get Rid Of?
Pyrantel pamoate treats large strongyles, small strongyles, roundworms, pinworms, and, at double the dose, tapeworms.
- Is Pyrantel a Good Dewormer?
Yes, pyrantel pamoate is a broad-spectrum dewormer effective against several common equine parasites.
- Does Pyrantel Pamoate Get Rid of Tapeworms?
Yes, at double the standard dose, it is effective against tapeworms.
- Does Pyrantel Pamoate Need to Be Refrigerated?
No, pyrantel pamoate does not require refrigeration. Store it in a cool, dry place away from direct sunlight.
- Is Ivermectin Better Than Pyrantel?
Ivermectin is effective against a broader range of parasites, including bots and some external parasites. Pyrantel pamoate is effective against certain internal parasites, including tapeworms at double the dose. The choice depends on the specific parasites present.
- What Worms Does Pyrantel Not Treat?
Pyrantel pamoate is not effective against bots, liver flukes, or certain tapeworms unless administered at double the standard dose.
- Can Ivermectin and Pyrantel Be Used Together?
Yes, they can be used together to target a broader range of parasites. However, always consult with a veterinarian before combining treatments.
- What Parasites Are Killed by Pyrantel?
Pyrantel pamoate is effective against large strongyles, small strongyles, roundworms, pinworms, and, at double the dose, tapeworms.
- Is Panacur the Same as Pyrantel?
No, Panacur contains fenbendazole, which is effective against different parasites compared to pyrantel pamoate.
- How Long Does It Take for Pyrantel Pamoate to Work?
Pyrantel pamoate begins to paralyze parasites shortly after administration, leading to their expulsion within 24 hours.
- How Often Do You Deworm with Pyrantel?
The frequency depends on the horse’s age, environment, and parasite load. Consult your veterinarian for a tailored deworming schedule.
- Which Is Better: Pyrantel Pamoate or Mebendazole?
Both are effective against different parasites. Pyrantel pamoate is effective against large strongyles and tapeworms, while mebendazole targets small strongyles and roundworms.
- Do You Need a Prescription for Pyrantel Pamoate?
In many regions, pyrantel pamoate is available over-the-counter. However, it’s advisable to consult with a veterinarian before administering any dewormer.
References:
- Pyrantel Pamoate | EquiMed – Horse Health Matters
- Best Pyrantel Dosage Guide for Various Animals
- Pyrantel Paste for Animal Use – Drugs.com
- Strongid T for Horses: Uses, Dosage, Side Effects – Drugs.com
- Pyrantel Pamoate Suspension – Santa Cruz Animal Health
- Pyrantel Paste Horse Dewormer – PBS Animal Health
- Tetrahydropyrimidines – MSD Veterinary Manual
- Pyrantel Pamoate in Veterinary Medicine – Facts and Information – Petco
- Pyrantel Pamoate Suspension | Santa Cruz Animal Health
- Database Record Viewer | Horse Side Vet Guide
- Strongid – Zoetis
