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Zylexis Injection for Horses


Zylexis for Horses is an injections that can be given to horses to stimulate their immune system before periods of stress or crowding.

This product requires a prescription from your vet & will only be dispatched once we receive this prescription.

This is a refrigerated product and therefore will incur an additional charge for shipping.

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All orders over £39 receive free delivery * *terms and conditions apply


Returns It should be noted that, unfortunately, we cannot accept returns of any labelled products, including prescription medicines and flea and worming products. If the customer has requested a cancellation but the order has already been dispatched then we will not be able to cancel and refund the order. This also applies if the customer has ordered the incorrect dosage. Returns of any labelled products are only acceptable if it is due to an error in processing, or for an official recall. We are also unable to accept the returns of Caninsulin syringes, even if the packaging is unopened.

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Zylexis Injection for Horses

Zylexis is the first product in the UK which has been licensed as an immunmodulator for horses. Zylexis contains an inactivated virus which is unable to cause infection but acts as a super-antigen to boost the horse’s immune system. It has been shown to reduce the effects of respiratory disease and improve performance.

Zylexis is provided in a pack of 5 injections (just 2mls each). It is advised to be used at times of stress or crowding. The recommended treatment course is one injection initially, another 2 days later and a final injection 1 week after that. Zylexis should be stored in the fridge and will be sent out in a cold pack.

Zylexis contains inactivated Parapoxvirus ovis. It comes in 5 vials to be reconstituted.

Directions for Use:
  • The course of 3 injections are given intra-muscularly;
  • horses should be given the first injection (day 0),
  • then 48 hours later (day 2), given the second injection,
  • then 7 days after that (day 9), given the third injection.
  • Zylexis can be used in horses from 10 months of age onwards.

Zylexis should be stored in a refrigerator, between 2 – 8°C & protected from light.

Warnings & Contraindication-

  • Store in a refrigerator (2°C – 8°C) & protect from light.
  • Zylexis should not be used as a treatment in horses with chronic diseases of unclear causality.
  • Use the entire contents of each vial as one dose, regardless of size of the animal.
  • Pregnancy & Lactation- Seek advice from your vet

****This product is sourced in the United Kingdom and is intended for use in the United Kindgom only.****