Gastric ulcer horse supplements

Immun-Ocean GASTRO


SKU: N/A Category: Tags: ,

Product Description

Gastro is a 100% natural feed supplement comprising of Ascophyllum nodusum and Lithothamnium which provides a formulated balance of vitamins and minerals.  It is a natural approach to supporting the proper, efficient process of equine digestion, providing gastric and hind gut comfort.

Ascophyllum nodosum seaweed from the cold North Atlantic has been used for centuries as a natural source feed supplement, low in iodine and rich in vitamins, minerals and amino acids.  It is composed of 48 elements, 16 amino acids and 11 vitamins.

The macro algae is hand harvested in accordance with traditional and sustainable methods that have been used for centuries along the Atlantic coastline of Ireland.

Lithothamnium calcareum is a red algae belonging to the Corallinaceae family.  It grows extremely slowly, giving it time to filter and absorb large quantities of sea nutrients.  Lithothamnium provides a rich supply of minerals including 32 trace elements.

This naturally balanced mix of minerals, vitamins, amino acids and antioxidants helps to promote a healthy immune system and gut environment and aids the overall well-being of competition horses.

Gastro contains soothing properties to help ease irritation and promote intestinal health as well as a healthy balanced digestive system.  Gastro encourages the growth of friendly bacteria for regular gut function, which allows the horse maximum utilisation of the feed.

The Omega 3 fatty acids in Gastro are known for their uses in improving brain health and aiding concentration levels resulting in consistent performance.  The Omega 3 fatty acids have natural soothing properties which work quickly to ease stiffness, allowing your horse to move more freely.

Natural MSM  is a natural organic sulphur and is abundantly found in Ascophyllum.  It helps to maintain healthy and flexible joints, offering your horse both short and long term joint support.

With optimum levels of magnesium to help with nerve and muscle function this product contains no listed banned substances and is suitable for horses competing at all levels

Gastro is specially formulated for competition horses with gastric issues.
Powered by Irish goodness for naturally healthy horses.


Perfect ForBenefitsResults
High performance horsesAids digestive healthConsistent performance
EventersAllows maximum utilisation of the feedPromotes intestinal health
Polo poniesImmune supportImproved recovery times
Reduction of stress reaction

Horse supplements for gastric ulcers

Additional Information

Gastro is available in 5kb tubs.

It is available in both powder and pellet form.

Feed 25g twice a day and introduce gradually.


"With Immun-Ocean Gastro, I know my horses stay healthy and hold their form. Great value too."


"I've been using Immun-Ocean horse supplements for over a year. I now know I am riding extremely healthy, happy horses."


"My horses have been on Immum-Ocean Gastro since the beginning of the 2015 season. I am thrilled with the way they have maintained their condition and form."


"Alan's and my horses have been on Gastro for 2 months now and our results are doing the talking for us."


"I use Gastro on my 3 star event horse Soltair Justice. He is a fussy eater and is prone to ulcers when his work increases. I found that when fed Gastro he ate his feed better and maintained his condition. I now feed my entire yard this product as it seems to benefit them all and it's such an economical supplement to feed.
Their coats look good on it and they are happy horses."


"I have used Immun-Ocean on several patients which all made fast and prolonged improvement.
A Thoroughbred who got so stressed when it was feed time that he sweated up and couldn't eat because of the pain his ulcers created. He was put on treatment and Immun-Ocean Gastro and has returned to be his normal happy self.

An International Show jumper started to refuse work and lost a lot of condition. He had severe ulceration of the stomach. On Immun-Ocean Gastro he now happily does his work and looks a picture.
I am very confident to advise my clients to use this product for horses which are prone to develop Gastric Ulcers."


“I was recommended Gastro by my Instructor after my horse had issues with being mounted and ridden. It has totally transformed my ex racer into a calm concentrated horse who loves his work and his condition is amazing now.”


“It has made a huge difference with our 8 year old thoroughbred gelding, I have tried just about every supplement to help his digestive tract. Not only is his manure quality finally normal but his attitude has changed dramatically! He is much happier and more rideable.”


“I have been using Immun-Ocean Gastro for well over a year on all our horses. I initially used it on my top horse who is prone to ulcers and since he has been on it ulcers have become a thing of the past! Highly recommend and very cost efficient.”


“Since adding Immun-Ocean Gastro to their diets, my horses all look and feel fabulous, I wouldn't hesitate to recommend it.”


Leave a Review


Calcareous Marine Seaweed (Lithothamnium) spp, powder, Ascophyllum nodosum low temperature dried granules, yeast, live yeast (Sacchromyces cerevisau), flax oil, magnesium oxide and other minerals. Cadmium 0.37 mg/kg, Copper 170 mg/kg, Fluoride 370 mg/kg, Iodine 96 mg/kg, Lead 0.44 mg/kg, Mercury 0.1 mg/kg, Magnesium 52000 mg/kg, Molybdenum <3 mg/kg, Nitrogen 0.58 %, Phosphorous 680 mg/kg, Potassium 5300 mg/kg, Selenium <3 mg/kg, Zinc 390 mg/kg. Also contains cereals and flavours to enhance palatability.

Immun-Ocean Gastro does not contain any ingredient known to contravene the Jockey Club, FEI or BSJA rules. Immun-Ocean Gastro is free of contaminants such as caffeine, theobromine, hyoscine, hordenine, morphine and atropine.

Note: the values listed above are typical. Components of Immun-Ocean Gastro are natural products of marine origin and as such, are subject to seasonal variation.

Manufacturers Registration No: IEC 102244