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Strongid P Horse and Donkey Wormer

Strongid P Horse and Donkey Wormer
Original Paste » 1 Syringe (Treats 600kg Horse and Donkey)

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  • Original Paste » 1 Syringe (Treats 600kg Horse and Donkey) £8.50


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.

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  • Landline: 01582 842096
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All prices include VAT where applicable.

Medication Datasheets

Original Paste » 1 Syringe (Treats 600kg Horse and Donkey)

Strongid-P Paste 43.90% w/w

Qualitative and quantitative composition


Pyrantel Embonate 43.90 %w/w

For a full list of excipients see Pharmaceutical particulars.

Pharmaceutical form

Oral paste.

A smooth, pale yellow to buff paste for oral administration.

Clinical particulars

Target Species

Horses, ponies, donkeys and foals over four weeks of age.

Indications for Use, Specifying the Target Species

A broad spectrum anthelmintic for use in horses and donkeys for the control and treatment of adult infections of large and small strongyles, Oxyuris, Parascaris and Anoplocephala perfoliata.

Effective against benzimidazole resistant strains of small strongyles.


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

Special warnings for each target species

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 body weight, 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 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 (also widespread in the US and Canada). 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.

Special precautions for use

Special precautions for use in animals

The same oral doser 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.

Only for direct oral administration.

Special precautions to be taken by the person administering the veterinary medicinal product to animals

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

Adverse reactions (frequency and seriousness)

None known

Use during pregnancy, lactation or lay

The product is specifically recommended for use in mares which may be pregnant and/or lactating.

No adverse effects have been found or reported in trials using higher than recommended dosages.

Interaction with other medicinal products and other forms of interaction

None known.

Amounts to be administered and administration route


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

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

Remove the cap from the nozzle.

The paste is best deposited on the upper surface of the tongue. Introduce the nozzle end of the oral doser at the corner of the mouth. Direct the oral doser backwards and depress the plunger to deposit the paste onto tongue. Providing the paste is given in this way it is unlikely that any rejection will occur. Raising the head by a hand under the chin sometimes helps with swallowing.


For the control and treatment of strongyles Oxyuris and Parascaris but excluding Anoplocephala (tapeworm). Strongid-P Paste should be used at a dose rate of 19 mg pyrantel embonate per kg bodyweight.Bodyweight rangeDose – contents ofDose of pyrantel embonateUp to 150kg¼ oral doser2.85g151 – 300kg½ oral doser5.70g301 – 450kg¾ oral doser8.55g451 – 600kgFull oral doser11.40g

Note: Position locking ring over appropriate mark on plunger.

Dosing Programmes:

Strongyles. 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 horses and donkeys are 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 previously 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.

Dosage: For the control and treatment of tapeworms: Strongid-P Paste should be used at a dose rate of 38 mg pyrantel embonate per kg bodyweight, that is twice the dose rate for strongyles.

Dosing programme – Tapeworm: The need for re-treatment 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.

Overdose (symptoms, emergency procedures, antidotes), if necessary

The product has an extremely wide safety margin and overdosage should not produce any adverse reactions.

Withdrawal Period(s)

Horse meat: zero days.

Pharmacological particulars

Pyrantel embonate is a member of the tetrahydropyrimidine class of anthelmintic compounds. It possesses broad spectrum activity against the major gastro-intestinal helminths of animals and man.

It is effective against the following gastro-intestinal helminths of foals, adult horses and donkeys.

Large and small strongyles (including benzimidazole-resistant strains of small strongyles)

Oxyuris equi

Parascaris equorum

Anoplocephala perfoliata

Pyrantel acts as a potent agonist at acetylcholine (ACh) receptors on muscle cells of nematodes leading to neuromuscular block characteristic of depolarising agents. This results in a prolonged spastic paralysis of the worm and expulsion from the host.

Pyrantel embonate is relatively insoluble and poorly absorbed from the gut. Its activity is confined to parasites dwelling within the gut lumen. The small amount of pyrantel absorbed into the circulation is rapidly metabolised and the drug metabolites have no toxic potential.

Pharmaceutical particulars

List of excipients

Polysorbate 80

Methyl Hydroxybenzoate

Propyl Hydroxybenzoate

Sorbitol Solution 70%w/w (non-crystallising)

Sodium Alginate

Water purified


None known.


Shelf-life of the veterinary medicinal product as packaged for sale: 3 years.

Shelf-life after first opening the immediate packaging: 2 months.

Special Precautions for Storage

Protect from direct sunlight.

Do not store above 25°C.

Store in a tightly closed original container.

Nature and composition of immediate packaging

Pack size:26g

Container: Metering syringe with high density polyethylene barrel, plunger and locking ring.

Closure: Low density polyethylene piston and endcap.

Content: Pale yellow to buff coloured oral paste.

Special precautions for the disposal of unused veterinary medicinal products or waste materials derived from the use of such products, if appropriate

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

Marketing Authorisation Holder (if different from distributor)


Marketing Authorisation Number

Vm 00006/4130

Date of the first authorisation or date of renewal

23rdMay 2004

Date of revision of the text


Any other information

Legal category

Delivery Information

How quickly do you deliver?

Under almost all products on our website is an Estimated dispatch time, check this for a delivery prediction specific to the item you are looking to purchase. These badges are updated live based on the stock levels we have and also those of our suppliers - so are usually very accurate, but cannot be guaranteed. In more general terms, we aim to dispatch all orders within 1 working day of receiving payment (and a prescription if required). If we cannot do so within 3 working days we will contact you by email.

What do you charge for delivery?

For UK delivery, we charge the following:

Order Total Weight Delivery
£0-£28.99 Under 2kg £2.99
2kg+ £4.99
£29-£38.99 Under 2kg Free
2kg+ £4.99
£39+ Under 2kg Free
2kg+ Free

Prices quoted are for delivery to all parts of mainland UK except certain Scottish postcodes (where the price is higher for items sent by courier. Delivery of food abroad (including Channel Islands, N. Ireland and other islands around the UK) is charged at a higher price and free delivery is not available. Temperature controlled products are also not always subject to the standard and/or free delivery options.

For full information on our delivery charges, including prices on heavy deliveries to Scotland and abroad, see our delivery information page.

We can deliver most items to all around the world, but prices do vary. To find the exact cost of shipping your item, and to see all options available, follow these steps:

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  3. Delivery information including price will automatically update to what is available to you

Delivery of aerosols

Due to restrictions aerosols can't be sent by Royal Mail. We appreciate your understanding.

Delivery of temperature controlled items

Some products, such as non-ambient items and frozen food, need to be delivered in insulated packaging to prevent them from getting too warm (or too cold) during transit from us to you. Purchasing any of these items in your order will result in a £1.99 charge being added to the total to cover the high cost of the insulated packaging materials. You only pay the £1.99 once per order, regardless of how many temperature controlled items you purchase in that order.

How do I cancel or return an order?

Please call us as soon as possible if you need to amend or cancel an order on 01582 842096. If your order has been processed for dispatch we will be unable to cancel or amend the order. You will however be able to return your product for a full refund*.

To return an item, you must contact us by phone or email to arrange this BEFORE posting any product back to us. We will explain the process at this stage for you.

*For full details on returns, see our terms and conditions page.

Reviews (68)

Q & A

Below are some recent questions we've received regarding Strongid P Horse and Donkey Wormer, including answers from our team.

18 August 2017 at 4:50pm

Worming Mare and Foal


  • VioVet customer since 2015
  • From: Cornwall, United Kingdom

How do I worm a lactating mare with a one month old foal with Strongid-P? Do both mare and foal get a dose each or if I give the mare a dose, will the foal receive some through the mare's milk?

  • Veterinary Advisor

You will need to dose the mare and foal separately according to their bodyweight. It is safe to give foals Strongid P from 4 weeks of age.

19 November 2016 at 5:28pm


Caroline booth

My horse is suffering with pinworm I have used Strongid p thelast two times as I find this expels them the best last time was a double dose in mid October can I do it again or should I use something else x I really need to try eradicate them they drive her mad xx

  • Veterinary Advisor

A Pyrantel based wormer such as Strongid P or Pyratape P is the best thing to use so you are doing the right thing. I would double dose with either one of these at 2 weekly intervals until you have eradicated the pinworm. Cleaning around her bottom daily will remove eggs laid by the adult worms overnight. You could also speak to your vet about an ivermectin and propylene glycol wash to apply around the bottom also.

2 September 2014 at 8:55pm



Which is the most effective wormer against threadworm?

  • Non-Executive Director

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.