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Equest Horse Wormer

  • Equest Gel (Treats 700kg Horse) » 1 Syringe £12.76

Equest contains moxidectin and is one of the few wormers licensed to control the important encysted larval stages of small red worms. It has a long period of anti-worm activity after the dose has been given (13 weeks) and so helps to reduce pasture contamination. Equest is also less toxic to the natural beetles and other insects which help to break up the dung on the pasture, compared with ivermectin-based products. This means that pastures tend to remain cleaner and healthier where the dung is not collected from the field.

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

If tapeworm control is also needed, then Equest Pramox has to be used, which contains the additional ingredient praziquantel.


EQUEST Oral Gel contains 18.92 mg/g moxidectin. Also contains 37.84 mg/g benzyl alcohol and 0.24 mg/g disodium edetate as preservatives.


Moxidectin is a second generation macrocyclic lactone of the milbemycin family.

For the treatment and control of adult and larval stages of important internal parasites including encysted inhibited EL3 and developing intramucosal L4 larval stages of small redworms, arterial stages of large redworms and bots in horses and ponies with a single dose.

EQUEST Oral Gel, at the recommended dosage level of 400 mcg moxidectin per kg bodyweight, provides effective control of moxidectin sensitive strains of the following parasites of horses and ponies:

Large strongyles:

Strongylus vulgaris (adults and arterial stages)

Strongylus edentatus (adults and visceral stages)

Triodontophorus brevicauda (adults)

Triodontophorus serratus (adults)

Triodontophorus tenuicollis (adults)

Small strongyles (adults and intraluminal larval stages):

Cyathostomum spp.

Cylicocyclus spp.

Cylicostephanus spp.

Cylicodontophorus spp.

Gyalocephalus spp.

EQUEST Oral Gel is effective against (developing) intramucosal L4 stages of small strongyles. At eight weeks after treatment early (hypobiotic) EL3 stages of small strongyles are eliminated.

EQUEST Oral Gel is effective against benzimidazole resistant strains of cyathostomes.


Parascaris equorum (adult and larval stages)

Other species:

Oxyuris equi (adult and larval stages)

Habronema muscae (adults)

Gasterophilus intestinalis (L2, L3)

Gasterophilus nasalis (L2, L3)

Strongyloides westeri (adults)

Trichostrongylus axei

EQUEST Oral Gel has a persistent effect in preventing infection by small strongyles for 2 weeks after dosing and suppresses the presence of small strongyle eggs in the dung for 90 days.

Dosage and administration

For oral administration. One 14.8 g syringe contains sufficient gel to treat one 700 kg horse at the recommended dose rate (0.4 mg moxidectin per kg bodyweight). Each graduation on the calibrated syringe delivers sufficient gel to treat 25 kg bodyweight. Use of a scale or weigh tape is recommended to ensure accurate dosing. To avoid overdosing, care should be taken to accurately dose foals, especially low bodyweight foals or young ponies.

Dosing guideline

The persistent activity of EQUEST Oral Gel and its effectiveness against inhibited and developing larvae in the intestinal mucosa enables a reduction in the dosing frequency in strategic parasite control programmes. The recommended dosing interval for the control of small strongyles is 13 weeks. Consult your veterinary surgeon for the appropriate programme for your specific needs.

Contra-indications, warnings, etc

Do not administer to young foals less than 4 months of age.

EQUEST Oral Gel is formulated specifically for use in horses only. Dogs or cats may be adversely affected by the concentration of moxidectin in this product if they are allowed to ingest spilled gel or have access to used syringes. Neurological signs (such as ataxia, muscle tremor and convulsions) and digestive clinical signs (such as hypersalivation) were recorded.

Do not administer in case of known hypersensitivity to the active ingredient or to any other milbemycins and to any other ingredients of the veterinary medicinal product.

Do not use the same syringe to treat more than one animal unless horses are running together or in direct contact with each other on the same premises.

Withdrawal period

Meat and offal: 32 days.

Operator warnings

Do not smoke, drink or eat while handling the product.

The use of protective gloves is recommended.

Wash hands or any exposed area after use.

Avoid direct contact with skin and eyes.

In the event of eye contact, flush the eye with copious amounts of clean water and seek medical advice.

Pharmaceutical precautions

After opening, use within 6 months.

Do not store above 25°C.

Keep the syringe in the carton.

After first use record the date to be disposed on the label space provided.

EQUEST Oral Gel is toxic to fish and aquatic organisms. Do not contaminate ponds, waterways or ditches with product or used syringes. Any unused veterinary medicinal product or waste material derived from such veterinary medicinal products should be disposed of in accordance with the local requirements.

Keep out of the sight and reach of children.

For animal treatment only.

Legal category


Packaging Quantities

Propylene syringe containing 14.8 g of gel with a graduated plunger and cap.

Further information

EQUEST Oral Gel is safe to use in foals over 4 months of age, mares, ponies and horses. Mares may be treated at any stage of pregnancy and lactation. Ataxia, depression, abdominal pain, muscle tremor, flaccid lower lip and swelling of the muzzle could be observed on very rare occasions. These adverse effects are usually transient and disappear spontaneously in most cases. Adverse reactions may occur at twice the recommended dose in foals and 3 times the recommended dose in adults. The signs are depression, inappetence, ataxia and drooping lower lip 8 to 24 hours following dosing. Symptoms of moxidectin overdose are the same as those observed in very rare occasions at the recommended dosage. In addition, hypothermia and lack of appetite may occur. Symptomatic treatment is not generally necessary and recovery is generally complete within 24 to 72 hours. There is no specific antidote.

EQUEST Oral Gel is specially formulated to be easily expelled by the syringe plunger. Once in the horse`s mouth, EQUEST Gel liquefies. This facilitates dosing and reduces the risk of rejection.

Marketing authorisation number

Vm 42058/4057.

GTIN (Global Trade Item No)

1 syringe:


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All prices include VAT where applicable.

Questions & Answers for Equest Horse Wormer

Below are some recent questions we've received regarding Equest Horse Wormer, including answers from our team.

Ask Your Own Question

Horse wormers

6th Jul 2017

Can you tell me which horse wormer should I use in July? and would Equimax tablets be suitable? Thank you

  • Website Content Developer

Hi Sue,

We have produced a worming guide for our customers which you can find here:

You would need to be worming for roundworm now so use a wormer containing fenbendazole or pyrantel.

I hope this helps.

What The product treats

30th Dec 2016
Lile branniff

Can this product treat ringworm

  • Veterinary Advisor

No this product won't treat ringworm. The name ringworm is misleading- it is actually a fungus. You will need Imaverol to treat ringworm.


5th Nov 2016
Rebecca Nash
  • VioVet Customer Since: November 2016
  • From: Dorset, United Kingdom

Is this wormer suitable for a 6 month foal, if not , which should I use. He has pin worm
Thank you

  • Veterinary Advisor

Equest can be used on foals from 6 months old. However I would suggest a Pyrantel based wormer such as Strongid P or Pyratape P at double the normal dose as the most effective treatment for Pinworm. Pinworm can be very persistent so you may need to repeat this again 2 or 3 times at 2 week intervals. It is also a good idea to clean around his bottom daily since the adult worms lay eggs around the anus- you may see a creamy white discharge.

Mares in foal

3rd Oct 2016
NATALIE REID (natalie050119)
  • VioVet Customer Since: July 2015
  • From: Gloucestershire, United Kingdom

When treating encrusted red worm which product would you recommend for mares in foal?
And also lactating mares with foals at foot
Many thanks

  • Veterinary Advisor

I would recommend using Equest for treatment of encysted red worm larvae over the winter. It is safe for use in pregnant mares and lactating mares with foals at foot. It is safe to give to foals from 4 months old.

Equest pramox or Equest + equi tape

8th Mar 2016
Susan Croucher
  • VioVet Customer Since: December 2012
  • From: Cornwall, United Kingdom

I have used Equest and pramox in the past with no issues but took shoes off of one of my horses last October and have heard that the pramox sometimes makes barefoot horses 'footy' or laminitic due to the disruption of the gut. Would it be better to give her Equest followed by equi tape a few days/week later or would it make no difference in your opinion?

  • Non-Executive Director

I think this will make no difference to her feet. You should choose your wormers based on other factors I feel. Ideally use faecal tests etc to determine likely worm burden, as some horses do not need such frequent worming. For others is it can be very important. Personally I would not get side-tracked down thinking about her hooves though.

Worming in foal mare

17th Nov 2015
fiona harrison

advice at worming in-foal mare at this time of year, what product can i use she is 5 months in foal

  • Meds Supervisor


We suggest Equimax as it is safe to use in pregnancy, Equimax treats round worm and tape worm.

You can find Equimax here

I hope this helps, if you have any further enquiries, please do not hesitate to contact us.

Worming horses

16th Nov 2015

Is the equest wormer a double dose wormer

  • Non-Executive Director

No, you never need to give a double dose of Equest. You should give the standard dose, but do try to give this as accurately as possible according to the genuine weight of your horse. Giving an under-dose is not helpful and it is better to slightly over-dose in fact if you are not quite sure of the weight of your horse.

A double dose of wormer is sometimes recommended to treat tapeworms. Equest is perhaps the best wormer for all the important roundworms in horses, but it has no real effect on tapeworms at any dose. Ideally you should give a different ingredient for tapeworms. Using Equest Pramox is a good way of doing this and covers all worms (at a standard dose).

Bot fly eggs

4th Aug 2015
Julia N
  • VioVet Customer Since: June 2013
  • From: Surrey, United Kingdom

We went away to the new forest a week ago and noticed a bot fly had laid eggs on both ponies. We removed as many of the eggs we could see. What wormer and how long after should we worm. If at all.

  • Non-Executive Director

This is a good wormer for bot fly larvae. Personally I would suggest dosing 7-14 days after leaving the New Forest. Ideally remove all the eggs as soon as you are aware of them of course.

When can I turnout

30th May 2015
How long before I can turnout

When can I turnout after using equest pramox

  • Non-Executive Director

For a horse on permanent pasture this is probably not important. The pasture will be contaminated to some extent with worm eggs and larvae already. If you are about to turn your horse out onto "clean" pasture which has not had any horses on it for at least a year, then you should wait at least 24 hours after dosing before turning out. That will delay the build-up of pasture contamination.

What wormer should I use?

24th Mar 2015

I have 2 horses that I have recently got and don't know when they were wormed last. Which should I use? They have their own field and dint share with any other horses.

  • Brand Manager

Of the two Equest products, I'd recommend using Equest Pramox as you do not know their worming history. It will target all key parasites and give you a clean slate to build a new worming plan from. Over summer, it would be beneficial to carry out a faecal egg count to find out whether the horses need worming for roundworm, and if they do, target the adult roundworm with a product containing either fenbendazole or pyrantel. Feel free to get in touch with us if you'd like further guidance!