Horse supplements for gastric health: Immun-Ocean GASTRO


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100% natural horse supplements for gastric health

Gastro is a 100% natural feed supplement comprising of Ascophyllum nodosum 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 maintain a healthy immune system and gut environment and aids the overall well-being of competition horses.

Gastro contains soothing properties to help maintain 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 supporting 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.
Powered by Irish goodness for naturally healthy horses.


Perfect For Benefits Results
High performance horses Aids digestive health Consistent performance
Eventers Allows maximum utilisation of the feed Supports intestinal health
Polo ponies Immune support Helping with stress

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.


“Quick update on Darcy. I am absolutely over the moon with her since she has been on KSB Equine’s Immun-Ocean Gastro. She is having the scoop of Gastro twice daily and she is back to my normal happy girl. She will stay on this permanently now:). I think the fact that it is all natural ocean based makes me more confident to keep her on it as I know she’s not getting any rubbish pumped inside her.”


We have had our foals and yearlings on Start Right and Gastro for the last two years and they look well, have a calm attitude and have been selling well. We are so pleased with the results that we have seen with Immun-Ocean that we have also started our mares on Breeders Blend.”


Immun-Ocean Gastro is fantastic to maintain condition and without doubt improves performance.”


We have an 8 year old who looked a bit flat in his coat and down in his general condition. We put him on Immun-Ocean Gastro and he bounced back, he looks great and he is now performing well in his dressage and show jumping. He looks completely different and he has freshened up and his coat looks gleaming. He was actually quite grumpy in the stable and he is now more amenable.

I believe that since he has been taking the Gastro supplement my horse has thrived and changed beyond all recognition.”


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


“I have been feeding all of our horses the Immun-Ocean Gastro product for a couple of years now. I have always been wary of introducing new supplements, but after seeing the positive results the Immun-Ocean Gastro product has had within the racing world, I wanted to give it a chance.

The horses, within a couple of weeks, developed a really healthy shine to their coats and looked better within themselves.

They started working with a much more relaxed attitude, especially the horses which are more prone to be stressed.

They are feeling fitter, recovering quicker and performing to higher standards, and I truly believe that the natural goodness within Immun-Ocean Gastro has had a large contribution to these outcomes.

Immun-Ocean is now a major part of maintaining our horses’ well-being and I would recommend the KSB Products to anyone looking to promote and improve the performance and happiness of their horses. It is a must!”


“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 particularly 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 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.”


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


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Calcareous Marine Seaweed (Lithothamnium) spp powder, Ascophyllum Nodosum low temperature dried granules, Calcium, Yeast, Live Yeast (Sacchromyces Cerevisau), Flax Oil, Magnesium Oxide, Ferritin and other minerals. Magnesium 52000 mg/kg, Copper 170 mg/kg, Phosphorous 680 mg/kg, Potassium 5300 mg/kg, Zinc 390 mg/kg, Selenium <3 mg/kg, Iodine 0.96 mg/kg. Also rich in Biotin, Lysine, Methionine, Vitamins K and E. Contains garlic to enhance palatability.

Immun-Ocean Gastro does not contain any ingredient known to contravene the Jockey Club, FEI or BSJA rules. Immun-Ocean is free of all contaminants.

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.