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About Pexion1


What is Pexion and how does it work?

Pexion is a treatment for dogs with primary epilepsy. It acts on a specific receptor in the brain cells to reduce the amount of excessive electrical activity present. In this way, like all epilepsy treatments, Pexion acts to reduce the number of seizures that your dog has and their impact on your dog’s life.


How is Pexion given?

Pexion is available as a white tablet. It should be given to your dog by mouth, twice a day. Your vet will advise you on how much Pexion to give to your dog. It is important that you always give the prescribed dose and follow the advice given by your vet. It is also likely that your vet may need to adjust your dog’s dose, and will therefore need to see your dog regularly.

It is important that you follow the advice your vet gives you on how to give your dog Pexion, and at what dose.


How long does Pexion take to work?

Pexion starts to work within a few hours. However, it may take a little while before you notice an improvement in your dog’s seizure pattern because:

  • The majority of dogs with primary epilepsy only experience a seizure every few weeks
  • Your vet may take some time to find the right dose of Pexion for your dog to reduce the frequency of their seizures

What if a dose of Pexion is missed?

Don’t worry, just give the next dose at the normal time. There is no need to increase the dose.


Does Pexion have any side effects?

Normally, dogs tolerate Pexion very well. Side effects, such as increased hunger, thirst or activity levels or any gastrointestinal upsets are generally mild. If any of these do occur, they usually go away over time. If you are concerned about your dog for any reason, please contact your vet for advice.


Will my dog still have seizures while they are taking Pexion?

It is very unusual for any dog with epilepsy to become completely seizure free even after they have begun receiving medication. Pexion, like all epilepsy medications, is licensed to reduce the number of seizures that your dog will have rather than eliminate them completely.


What will my dog’s life be like on Pexion?

As dogs with primary epilepsy are healthy in all other respects there is no reason why your dog should not go on to live a full and happy life.

Occasionally it may not be possible to control a dog’s seizures regardless of which medications they receive. Your vet will be able to provide information on what you can do if this is the case.



1. European Public Assessment Report (EPAR): Pexion.

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Brought to you by the makers of Pexion. Further information available in the SPC or from Boehringer Ingelheim Animal Health UK Ltd, RG12 8YS, UK. Pexion is a registered trademark of Boehringer Ingelheim Vetmedica GmbH, used under licence. ©2018 Boehringer Ingelheim Animal Health UK Ltd. All rights reserved. Date of preparation: Nov 2018. AHD11666. Use Medicines Responsibly.

This site is provided as an information service for veterinary professionals and the owners of dogs who have been prescribed Pexion by their vet. Pexion is a prescription-only medicine, available only on prescription from your veterinary surgeon. Any questions about your pet should be directed to your veterinary practice.

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© 2018 Boehringer Ingelheim Animal Health UK Ltd. All rights reserved. Company Registration Number: 711858 England & Wales. Boehringer Ingelheim Animal Health UK Ltd, Registered Office, Ellesfield Avenue, Bracknell, Berks RG12 8YS.