1 in 3 horses suffer from gastric ulcers

Could your horse have gastric ulcers?

Medical treatment: oral omeprazole

Oral omeprazole has been the reliable and undisputed first choice for treatment and prevention of equine gastric ulcers for many years. It is a licensed medicine which means it has been thoroughly assessed by the Veterinary Medicines Directorate (VMD) who concluded that it is proven to be an effective and safe treatment for equine gastric ulcers1.

Oral omeprazole acts by reducing the acidity of the stomach contents, which in turn limits the ulcerative effects this acid can have on the stomach lining.

While there are several brands of oral omeprazole licensed in the UK, only one brand is licensed for both treatment and prevention of equine gastric ulcers1 and has the official urine detection time approved by the EHSLC (European Horserace Scientific Liaison Committee)


Administration is simple; this medicine can either be syringed directly into your horse’s mouth using the syringe provided or mixed with food, whichever you and your horse prefer (or whichever is more convenient for you).


Although it is generally accepted that most cases of gastric ulceration are straightforward to treat, it is important to understand that it takes time for ulcers to heal. Therefore it may take a few weeks before an improvement in clinical signs (symptoms) is seen, and the full course of 28 days of treatment is usually needed in order for the gastric ulcers to fully heal.


In cases where ulcers are particularly severe, your veterinary surgeon may prescribe additional medication to support the healing process, and in refractory (poorly responding) cases may even consider alternative treatments2. These medications are not licensed for the treatment of gastric ulcers in horses and therefore the careful decision to prescribe these products will always be made on a case-by-case basis following a risk:benefit consideration by your veterinary surgeon.