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Strongid P Horse Wormer

  • Original Paste » 1 Syringe (Treats 600kg Horse) £7.90


A broad spectrum general wormer, Strongid uses the active ingredient Pyrantel Embonate to destroy and control adult large and small Strongyles, Oxyuris. Parascaris and Anoplocephala Perfoliata. Double dose for Tapeworms. Particularly useful on worms with Benzimidazole resistance. Suitable for all equids, including foals over 4 weeks of age. Easy to administer paste.

The presence of worms can be checked in your horse using a Worm Testing Kit.


Strongid-P Paste is a pale yellow to buff paste, containing 43.9% w/w pyrantel embonate and presented in a disposable plastic syringe/oral doser.

Each oral doser contains 11.41 g pyrantel embonate in 26.00 g paste.


Strongid-P Paste is a broad-spectrum anthelmintic, which is indicated for use in the horse and donkey for the control and treatment of adult infections of large and small strongyles, Oxyuris, Parascaris and Anoplocephala perfoliata.

Strongid-P Paste is effective against benzimidazole resistant strains of small strongyles.

Dosage and administration


Strongid-P Paste is recommended for direct oral administration in horses, ponies and foals of over four weeks of age and donkeys. It is not necessary to withhold any feed prior to administration. The following method of administration is recommended:

1.Position the locking ring over the appropriate mark on the plunger.

2.Remove the cap from the nozzle.

3.The paste is best deposited on the upper surface (dorsum) of the tongue. Introduce the nozzle end of the syringe at the corner of the mouth (labial commissure). Direct the syringe backwards and depress the plunger to deposit the paste onto the tongue. Providing the paste is given in this way it is unlikely that any rejection will occur. Raising of the horse's head by a hand under the chin sometimes assists in the swallowing process.


For the control and treatment of strongyles including benzimidazole resistant strains (redworm), Oxyuris (seatworm/pinworm) and Parascaris (roundworm).

Strongid-P should be used at a dose rate of 19 mg pyrantel embonate per kg bodyweight.

Bodyweight range

NB: 1 kg = 2.2 Ib

Dose–contents of

Up to 150 kg

¼ oral doser marked

150 kg

151 kg to 300 kg

½ oral doser marked

300 kg

301 kg to 450 kg

¾ oral doser marked

450 kg

451 kg to 600 kg

Full oral doser

marked 600 kg


Position locking ring over appropriate mark on plunger.

Dosing programmes

Strongyles (including benzimidazole resistant strains), Oxyuris and Parascaris.

Foals - one to eight months of age

Dose every four weeks.

Horses and donkeys over eight months of age

Routinely dose every six to eight weeks, but during the summer and autumn when at grass dose every four to six weeks.

Always dose three to four days before turning out after in-wintering.

Suckler mares

It has been shown that reduction of strongyle challenge to the suckling foal at pasture can be achieved by using clean pasture (re-seeded or not grazed the previous year by horses), dosing the mare three to four days before turning out and then at intervals of two to four weeks until the end of autumn.

Ideally mares with foals should go out to `clean' pasture or, if this is not possible, delay turning them out until June.


For the control and treatment of Anoplocephala perfoliata: (tapeworm). Strongid-P should be used at a dose rate of 38mg pyrantel embonate per kg bodyweight, that is twice the dose rate for strongyles.

Dosing programme – Anoplocephala perfoliata

The need for retreatment may vary, but if considered necessary should be carried out after an interval of six weeks.

To ensure administration of a correct dose, body weight should be determined as accurately as possible; accuracy of the dosing device should be checked.

Contra-indications, warnings, etc

Not for use in horses with known hypersensitivity to the active ingredient.

Only for direct oral administration.

The same oral dose should only be used to dose two animals if they are both healthy and are either running together, or are on the same premises and in direct contact with each other.

Avoid contact with the skin. Wash hands and any other parts of the body which come into contact with the product.

To be used for animal treatment only

Keep out of the reach of children

Withdrawal period

Horse meat: zero days.

Care should be taken to avoid the following practices because they increase the risk of development of resistance and could ultimately result in ineffective therapy:

•Too frequent and repeated use of anthelmintics from the same class, over an extended period of time.

•Underdosing, which may be due to underestimation of bodyweight, misadministration of the product, or lack of calibration of the dosing device (if any).

Suspected clinical cases of resistance to anthelmintics should be further investigated using appropriate tests (e.g. Faecal Egg Count Reduction Test). Where the results of the test(s) strongly suggest resistance to a particular anthelmintic, alternative anthelmintics belonging to another pharmacological class and having a different mode of action should be used.

Resistance to pyrantel has been reported in cyathostomes in horses in a number of countries, including the EU. Therefore the use of this product should be based on a local (regional, farm) epidemiological information about susceptibility of nematodes and recommendations on how to limit further selection for resistance to anthelmintics.

Pharmaceutical precautions

Do not store above 25°C. Store in tightly closed original container.

Protect from direct sunlight.

Any product remaining 2 months after first use of an oral doser should be discarded.

Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements.

Legal category


Packaging Quantities

Each oral doser contains 11.41 g pyrantel embonate in 26.00 g paste.

Further information

Strongid-P Paste is well tolerated and is safe to give to horses and donkeys, including young foals of over four weeks of age and pregnant and/or lactating mares, provided the recommendations are followed.

Pyrantel embonate is the recognised UK name for the active principle in Strongid-P Paste and is synonymous with pyrantel pamoate.

Marketing authorisation number

Vm 00006/4130.

GTIN (Global Trade Item No)

Strongid-P Paste


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2nd Sep 2014

Which is the most effective wormer against threadworm?

John Cousins
  • Veterinary Surgeon

If you mean the neck threadworm (Onchocerca spp.) then Eqvalan is licensed to treat them and would be the usual choice. It is also theoretically helpful to try and reduce midges biting your horse, as they are responsible for transmitting this parasite. Good fly repellents based on a high concentration of DEET are probably the best. NAF Off DEET Power is a good example.