"Max Gut-Health is a unique combination of calcareous marine algae and a highly live yeast, designed as a probiotic to support a healthy hindgut environment in horses"


Milled Seaweed (Calcareour Marine Algae), Vistacell Live Yeast. Zootechnical additive: gut flora stabiliser saccharomyces cerevisiae MUCL 39885 at recommended feed rate prvides 2.5 x 1010 CFU. 

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Our Story

I have been in the problem horse business for over 25 years, in that time I have researched and learned so much about horse behaviour and why it changes. 

This product for many horses has been a game changer. A healthy gut leads to a healthy horse

promotes the growth of fibre digesting bacteria

When horses undergo a period of stress, fibre fermentation is often decreased. Therefore, promoting the growth of fibre-degrading bacteria in the gut enhances fibre fermentation and helps to maintain a healthy gut. 

reduces acid accumulation in the hind-gut

The live yeast within Max Gut-Health competes with the lactate-producing bacteria for sugars, thereby reducing acid load and helping to maintain pH within the hindgut. Maintaining a healthy gut environment optimises overall health.


This time of year, horses are getting more turnout due to the changes in weather. However, such seasonal changes have a significant impact on the nutritional value of grass. Constant fluctuations in sugar levels make it hard for the digestive system of horses to function effectively. The following is a brief explanation as to how the changes in grass impact the hind gut and why this causes behavioural changes in many horses. 

The level of sugar in pasture grass varies due to several factors, including the weather, how stressed the grass is, its maturity, the time of year, and the time of day. Reactions of horses to grass growth, particularly in Spring, are due to the higher sugar level – fructans. Not only is the growth rate increasing, but also the mornings are cooler. When the sun comes up, and photosynthesis starts, the starch levels are low as this process requires heat from the sun. The fructan levels are higher but as the growth has not started, the plant stores the sugar and so the stems have particularly high levels. As the day warms up both starch and sugars are increasing but more in balance. When night comes the process stops – neither sugar nor starch is produced. 

Higher fructan levels affect horses as they have difficulty digesting these sugars which often pass undigested into the hindgut where they can cause hindgut acidosis. This causes discomfort, even pain. So, their behaviour changes, although actual responses will vary as horses are all different, hypervigilant behaviour e.g spookiness, excess energy etc is common. Some may seem tense, touchy and girthy or just generally uncomfortable. It is mainly the discomfort from the unprocessed feed in the hindgut that causes the biggest reactions. 

By supporting the hind gut through during periods of change, within our control or otherwise, the horse can digest forage more effectively thus reducing the amount of acid build up leading to discomfort. By doing so we can keep horses more comfortable and more able to perform to their best ability.

Max Gut-Health has been. Designed to reach the hind gut to help create and maintain a pH neutral environment. 

The most important job is to keep the good bacteria in the hind gut prolific and abundant, this allows the bacteria to be able to break down fibre really efficiently and absorb nutrients, minerals and vitamins. This stability in the hind gut environment allows the horse to utilise any food and achieve maximum nutritional value

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