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Equest Range

Equest range

Equest Pramox contains Moxidectin and Praziquantel.
Equest contains Moxidectin.

Equest, which contains Moxidectin, treats a broad range of worms including large and small strongyles (redworm), large roundworm, bots, pinworm and threadworm. Equest Pramox also contains Praziquantel and so is also licensed to treat tapeworms1.                                                                                                                                                                                                                               

Equest and Equest Pramox are the only products licensed to treat encysted small redworm in a single dose.

Small redworm are now recognised as the major parasite of concern in adult horses2. 

As there is no available test to detect encysted stages of small redworm, which have the capacity to cause extremely severe disease and even death, a properly timed effective treatment is routinely recommended2.

Moxidectin lasts longer than any other worming product in the market. The egg reappearance period of small redworm is 90 days1.

Equest and Equest Pramox are licensed for use in foals over 4 months and 6.5 months of age respectively.

Both Equest and Equest Pramox are safe for use in breeding, pregnant and lactating mares1.

A single syringe treats a 700kg horse1.

Current studies suggest that resistance to Moxidectin in small redworm is less widespread than with other actives, however strategic use of all worming treatments is recommended2.


Summary of Equest Product Characteristics: Full product licence here
Summary of Equest Pramox Product Characteristics: Full product licence here

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  • Encysted small redworms are the most common and harmful worms found in horses, with the larval stages of this parasite giving the greatest cause for concern.3

    Small redworm larvae can encyst within the gut wall throughout the year – especially in Autumn and Winter. Typically, sudden mass emergence will occur in Spring and can cause diarrhoea and colic.4 This condition is known as larval cyathostominosis, which can be life-threatening. Up to a 50% mortality rate has been reported.5

    Although a Faecal Egg Count (FEC) is an excellent tool to monitor worm burdens during turnout, it won’t detect encysted redworm. Horses can harbour several million encysted larvae, yet show a negative or low (<100 epg) FEC.5

    Control needs to be focused on all stages of the parasite’s lifecycle, with specific attention paid to the encysted larvae.


    Every horse at risk should be treated for encysted small redworm in late autumn or winter.


  1. EQUEST Oral gel (moxidectin) Data Sheet, December 2013, EQUEST PRAMOX Oral Gel (moxidectin and praziquantel) Data Sheet, January 2014

  2. American Association of Equine Practitioners Parasite Control Guidelines revised 2013

  3. Love S, et al. Veterinary Parasitology 1999; 85: 113−122.

  4. Steinbach T, et al. Veterinary Parasitology 2006; 139: 115−131

  5. Dowdall SMJ, et al. Veterinary Parasitology 2002; 106: 225−242.