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Ultimate Gastro-Ease®

Complete support for equine gastrointestinal comfort.

568 reviews. 4.9 / 5
  • Reviews
  • Technical
  • Feeding Guide
  • FAQs
Hilary - 09/01/2026 15:05
Amazing product! Keeps our competition horses tummies happy. With gastric ulcers being a real issue with competition horses, helping to keep the gut balanced is so important and Ultimate Gastro-Ease ticks all the boxes.
Guest - 08/01/2026 19:54
Notice within a week an improvement in the horses behaviour
Guest - 06/01/2026 18:10
My horse has never liked having rugs put on or being tacked up, he’s very girthy.
I got him scoped for ulcers but he was clear. I’ve tried several gut products to try and help him but the only one I found to help was Gastro Ease.
ann - 04/01/2026 20:27
Excellent product made a real difference my pony's nutritionist recommended it
Yvonne - 03/01/2026 08:33
Appears to be working great for my mare who has been constant on/off with ulcers. She isn’t on the full dose as it’s been difficult to feed her but we’ve managed it now so far
francesca - 02/01/2026 08:22
I have ordered this twice, and since my first order I have gone for the 90 day supply. This product is great for my ulcery TB especially this time of year!
Catherine - 31/12/2025 20:24
We've used gastro ease as it has similar ingredients to a vet recommended one but for a better price.  We've had our mare on it for 5 months now and she seems much happier with her tummy now
Guest - 31/12/2025 13:12
I have been using Ultimate Gastro Ease for a month now on my young mare . She is definitely feeling better.
Ruth - 30/12/2025 21:58
Have been using this only a short period of time but my horse certainly seems to be happier and his gut a lot more settled which is great as he has suffered from ulcers in the past.
Anne - 29/12/2025 19:59
Having felt with bad ulcers I find that this product helps my horse enormously. I would recommend it.

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Nutrition Information

Ensuring digestive comfort is important to allow our horses to thrive and perform to the best of their ability. Ultimate Gastro-Ease® is a unique blend of ingredients that supports comfortable and efficient digestion by providing complete support from the stomach to the hindgut.  

The mineral salts Calcium carbonate, Dicalcium phosphate, Magnesium hydroxide, and Magnesium carbonate, contribute to maintaining a healthy gastric environment and help support the mucosal lining of the stomach and small intestine.  

Lecithin is highly hydrophobic (water hating), while Pectin forms a gel-like substance that binds to bile acids when exposed to an acidic environment. When combined, Lecithin and Pectin support the natural protective mucosa of the stomach, which is known to become irritated by high-concentrate diets, medications, and stress.

Support for the sensitive microbial population in the hindgut is provided by the unique combination of pre-, pro- and postbiotics in Ultimate Gastro-Ease®:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prebiotics:

The prebiotics (Fructooligosaccharide (FOS) and Mannan oligosaccharide (MOS)) provide food sources for beneficial bacteria that are responsible for fermenting fibrous foodstuffs the horse eats.  

 

Probiotics:

The probiotic YeaSacc® provides the horse with a supply of live yeast (Saccharomyces cerevisiae) which is an important component of the microbial population, and which stimulates the activity of bacteria within the hindgut, optimising fibre fermentation. This probiotic also maintains activity of bacteria that break down lactate which helps to support the hindgut.  

 

Postbiotics :

Postbiotics are non-living microorganisms and their byproducts, that can support your horse’s gut health. In Ultimate Gastro-Ease®, the postbiotics contain beneficial cell components and metabolites. These work to promote a healthy balance of bacteria in the horse’s gut, supporting overall digestive health.

Postbiotics have been shown to increase volatile fatty acid production in horses, which enhances fibre fermentation, particularly for high-fibre forages. This makes Ultimate Gastro-Ease® particularly beneficial for horses and ponies fed low calorie, high fibre diets and for metabolic or weight management reasons. 

Bacteria species within the hindgut are also more consistent in horses fed the postbiotic compared to those fed a control diet, making it beneficial for keeping the hindgut stable and maintaining digestive comfort. 

 

Further supporting immunity in Ultimate Gastro-Ease® are Kaolin and specialised beta glucans which bind to pathogens, helping to keep the gut healthy. The amino acid Glutamine also provides an energy source to immune cells ensuring optimal function. 

With an aromatic and settling mint aroma, Ultimate Gastro-Ease® provides a highly palatable unique combination of ingredients suitable for all horses and ponies with additional digestive, gastric and hindgut needs. 

 

 

Composition

Yeast products (supplying postbiotics), Fructo-oligosaccharide (FOS), Magnesium hydroxide (10%), Yeast products (supplying Mannan-oligosaccharide and Beta glucans), Alfalfa meal, Calcium carbonate, Dicalcium phosphate, Magnesium carbonate (4%), Molasses, Hydrolysed wheat glutamine peptides, Pectin (2%)

Additives

 

Additive number 

per kg

Binder 

 

 

Kaolinic clay

E559

43g

 

 

 

Antioxidants 

 

 

Soy lecithin

1c322i

17g

 

 

 

Flavouring

 

 

Peppermint oil

 

1g

 

 

 

Digestive enhancers 

 

 

Yea-Sacc® live yeast (4a1704 Saccharomyces cerevisiae CBS 493.94)

21,350,000,000cfu

 

Analytical

Crude protein 8.1%
Crude oils & fats 3.2%
Crude fibre 4.7%
Crude ash 34.1%
Acid insoluble ash       2.4%
Sodium 0.1%
Calcium 5.1%

 

Feeding Guide

 
Weight of Horse/Pony           Amount per day
Up to 250kg 1 ½ scoops 
250kg - 400kg 2 ½ scoops 
400kg - 600kg 3 ½ scoops 
Over 600kg  4 ½ scoops
 
1 level (50ml) scoop of Ultimate Gastro-Ease® weighs approximately 36g
 

Ultimate Gastro-Ease® should be added immediately prior to feeding, keeping the supplement as dry as possible, otherwise effectiveness may be lost.

Avoid feeding large concentrate meals (pellets, mixes and grains). Instead feed little and often throughout the day, especially concentrate feeds. Always feed at least 1.5% of your horse's body weight per day as fibrous forage (for a 500kg horse feed at least 7.5kg of fibre per day). Horses showing signs of excess acid should have continuous access to forage.


Ultimate Gastro-Ease® is a complementary feeding stuff for equine animals. Feed supplements should be fed according to body weight. Introduce to the horse’s diet gradually, splitting between feeds (when applicable). Feedmark uses nothing in the formulation of this product that contravenes competition rules.

Shake periodically to avoid settling.

How does Ultimate Gastro-Ease® support my horse’s entire digestive tract?

Ultimate Gastro-Ease® supports the horse’s entire digestive tract by combining a unique blend of ingredients that support the stomach, small intestine, and the hindgut:

Stomach and small intestine: Mineral Salts, Lecithin, and Pectin help maintain a healthy gastric environment and support the mucosal lining.

Hingut: A combination of pro, pre, and post biotics support a stable and healthy microbial population in the hindgut. 

 

Can this supplement be fed in damp feed?

We recommend feeding Ultimate Gastro-Ease® as dry as possible as when exposed to moisture for a long period the supplement can be less effective. We advise adding just prior to feeding, or layering between chaff. 

 

How long will it take to help support my horse's digestive system?

This will differ depending on your horse. We always suggest that you feed a supplement for at least 4 weeks at the recommended serving rate for your horse’s weight to see how they respond.