21/03/2026
⚖️⚖️NUTRITIONAL NEWS⚖️⚖️
Using corn oil to help with ulcers.
I was recently at an educational evening held by Rangiora Vets where they discussed ulcers. A big take away from this was the use of corn oil to reduce ulcers as a form of treatment. Naturally, everyone’s ears perked up with being told that using a natural item could combat ulcers…..however my ears perked up and my brain started whizzing with flashing lights – good flashy and bad flashy!
✅Good Flashy Lights
➡️One study has shown that corn oil helps to reduce acid output in the stomach, therefore aiding in the gastric mucosa (1).
➡️Another study found that corn oil helped to heal glandular ulcers. The corn oil did not show any healing to the non-glandular ulcers (2).
➡️Corn oil is a natural product, i.e. not a chemical and can be purchased over the counter.
➡️Corn oil provides a good source of slow release energy without the fizz (as all oils do).
⁉️Bad Flashy Lights
➡️One depravation of feed study found that corn oil did not help to prevent or heal non-glandular ulcers (3).
➡️Corn oil, like all oils can be unpalatable to horses – introduction must be slow, increasing a small amount every 4 or so days.
➡️Corn oil contains more omega 6 than omega 3 – ratio is approx. 55 : 1. Linseed (flax) oil is 14 : 57! Omega 6 and 3 are essential fatty acids which the horse needs but their bodies cannot create. So they need to be fed as part of their diet. Omega 6 is inflammatory while omega 3 is anti-inflammatory – both are required. However, a horse with PPID or asthma for example would require more omega 3 to help their body cope with their ailment.
Takeaway message
➡️First and foremost, talk to your Vet and get a scope performed so you know what you are dealing with.
➡️While it may not be the help required to cure your horse of non-glandular ulcers, corn oil is definitely a contender to help prevent both glandular and non-glandular ulcers as the oil helps to create the mucous layer in the stomach.
➡️Be careful how much you feed as it may create an unbalanced diet for your horse. If you do choose to feed, introduce slowly so your horse gets used to the taste and texture in their feed.
Remember, there is no “one size fits all”
Boundary Equestrian
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Providing nutritional support and diets.
(1) Cargile, J.L., Burrow, J.A., Kim, I., Cohen, N.D. and Merritt, A.M. (2004), Effect of Dietary Corn Oil Supplementation on Equine Gastric Fluid Acid, Sodium, and Prostaglandin E2 Content before and during Pentagastrin Infusion. Journal of Veterinary Internal Medicine, 18: 545-549. https://doi.org/10.1111/j.1939-1676.2004.tb02583.x
(2) Martinez J, Carmona J and Silveira G (2016), Effects of corn oil on the volatile fatty acids in horses with induced gastric ulcers. Scientific Electronic Library Online, Ciudad Universitaria, Montería, Córdoba, Colombia http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-02682016000305558
(3) Nicholas Frank, DVM, PhD; Frank M. Andrews, DVM, MS; Sarah B. Elliott, BS; John Lew, PhD (2005). Effects of dietary oils on the development of gastric ulcers in mares.https://www.researchgate.net/profile/Frank-Andrews/publication/7434607_Effects_of_dietary_oils_on_the_development_of_gastric_ulcers_in_mares/links/563ed54a08ae34e98c4db3a8/Effects-of-dietary-oils-on-the-development-of-gastric-ulcers-in-mares.pdf
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