Immun-Ocean GASTRO Equine Supplement for High Performance Horses

100 Days Supply for One Horse

COST PER DAY: Gastro: £1.50 / €1.55


✓ Consistent performance.

✓ Supports gastric health.

✓ Supports athletic effort & recovery times.

✓ Helps with calming.


GASTRO is specially formulated for high performance horses. It 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.

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.

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.

Powered by Irish goodness for naturally healthy horses.

High performance horses
Show Jumpers
Polo ponies

Immune support
Aids digestion
Allows maximum utilisation of the feed
Aids flexible joints

Consistent performance
Supports intestinal health
Helping with stress


GASTRO is available in 1.5 kg (30 days supply for one horse) and 5kg tubs (100 days supply for one horse).

1 scoop = 25g

Adult Horses = 1 Scoop twice per day mixed with regular feed.

Introduce gradually over 7/10 days.

Concentrated supplement – not to be fed ad lib. Mix well before use and store in a cool, dry place.


COMPOSITION Seaweed Meal (Ascophyllum Nodosum), Lithothamnium, Magnesium Oxide, Veg Oil &Fat (Flax Oil).

DIGESTIBILITY ENHANCERS Saccharomyces Cerevisiae NCYC Sc 47/CNCM I-4407 (4b1702) 1010CFU/g.

ANALYTICAL CONSTITUENTS Crude ash 62% Crude fibre 7.7% Crude protein 2.6% Crude fat 2.18% Sodium 1.41%.

These unique macro algae blends naturally contain calcium, magnesium, copper and omega 3.

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

Customer Reviews

Based on 18 reviews
Norman Williamson - Bloodstock Consignor
Immun-Ocean GASTRO

Those horses that we have had on Immun-Ocean Gastro have thrived since I started feeding it to them and it really shows in their overall condition and health.

Tom Clover – Race Horse Trainer
Immun-Ocean GASTRO

Since we started using Immun Ocean Gastro, I have found that the horses have kept their condition better and maintained their form throughout the season.

Clare Warman – Veterinary Physiotherapist
Immun-Ocean GASTRO

My 3 Horses have only been on Immun-Ocean for a week at the recommended dose. They mainly live out, aren’t clipped and I haven’t groomed them this morning. Look at the shine! Also less stress indicators in their behaviour.

Ian Stark – International Eventer
Immun-Ocean GASTRO

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.

Suzanne Posnett
Super product

I would highly recommend this product. I have found a huge difference since feeding it.