Horse Worming FAQs


Q: There are so many wormers on the market – aren’t they all the same?

A: No! There are many different active ingredients used in various horse wormers. These include Moxidectin, Invermectin, praziquantel, or a combination of these, amongst others. Each active ingredient works for a different length of time, and on different types of worms. It is therefore important to assess which is most suitable for your needs.

Q: What are the most common worms?

A: Small redworms are possibly the most common type of worm in the UK, and can cause diarrhoea, rapid weight loss and severe colic.

Q: What damage do worms actually cause?

A: Weight loss, colic, a dull coat, lethargy and loss of performance are all common symptoms of worm infestations in equines.

Q: What is strategic worming?

A: This technique uses a combination of effective pasture management and diagnostic tests such as worm counts to reduce the need for unnecessary worming treatments. For more information on effective pasture management, view our previous blog on the subject here.

Q: Should you worm foals?

A: You can worm foals from the age of four weeks onwards. They have no resistance to worms so this is important – just ensure the wormers you chose are suitable for young foals.

Q: Should you worm pregnant mares?

A: Yes – pregnant mares are still susceptible to worms, and it is even possible to transfer some worms to the foal through their mother’s milk. Ensure you worm just before foaling, and use wormers that are suitable for pregnant mares.

Q: Can I worm my horse if he is ill?

A: You must use common sense in this instance. If he has recently received veterinary treatment, try to wait until the animal has fully recovered, and consult your vet if necessary.

Information sourced from Eqvalan. To view our range of Eqvalan worming products, click here.

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