Restoring your horse's stomach lining step by step

Your horse seems to be eating normally but starts objecting when you groom the girth area, concentrates less well, becomes irritable when being tacked up or loses enthusiasm for movement. You often notice a change in behaviour before a major clinical sign. This is where the most difficult stage begins, because it is easy to blame temperament, stress, training or the season.

Quick answers rarely work for stomach problems. Restoring the stomach lining in a horse does not depend on one product, one change of feed or a short course of treatment "just in case". It is a process combining veterinary diagnosis, management changes, well-planned nutrition and sensible supplementation.

As an equine nutritionist, I look at the stomach through everyday stable life as well as symptoms. How long your horse goes without hay, their daily routine, how they cope with transport, whether their hard feed is suitable and whether they can eat peacefully often determine whether the lining really has a chance to recover.

What damage to the stomach lining means in horses

We usually associate damage to a horse's stomach lining with ulcers and the broader problem of EGUS. In practice, the stomach's natural protective layer stops effectively separating its wall from irritating contents. The horse begins to respond with pain, tension or discomfort, although this is not always obvious.

A horse's stomach works differently from the digestive system of a person or dog. Horses are adapted to taking in fibre almost constantly, chewing calmly and regularly buffering stomach contents with saliva. Stable management can easily disrupt this pattern. Several hours without hay, large hard-feed meals, intensive training, frequent travel and social tension within the herd all take their toll.

Why a horse's stomach is so sensitive

Put simply, a horse's stomach does not like being empty. When your horse goes without food for a long time, acidic contents have more contact with the more delicate areas of the stomach wall. Add exercise, abdominal compression and stress, and the risk of irritation increases.

Not every horse responds in the same way. One becomes more nervous under saddle, another starts eating more slowly, a third loses weight and a fourth simply "loses their sparkle". This is why you may not connect these signs with the stomach for a long time.

Some horses with stomach problems do not look "typically ill". They simply stop feeling comfortable in their own bodies.

What most often makes the lining worse in practice

Several factors recur very frequently, whatever level your horse works at:

• Long periods without fibre leave the stomach working without the natural protection provided by food and saliva.
• Too much starch increases the burden on the digestive system and often goes hand in hand with faster eating.
• Environmental stress includes transport, moving yards, isolation, changes to paddock groups and tension at feeding time.
• Exercise on an empty stomach is one of the most underestimated mistakes.
• Treatment focused only on symptoms improves comfort briefly but does not change the conditions sustaining the damage.

This is why stomach recovery does not begin at the supplement shelf. It begins by identifying what irritates the lining every day and what needs to be removed before you can expect lasting improvement.

Warning signs and professional diagnosis

Stomach problems rarely arrive labelled "ulcers". You usually see a collection of small changes that seem insignificant individually. Only together do they form a coherent picture.

Subtle signs you should not dismiss

In many horses, the first signs do not look dramatic. They are more a change in everyday functioning than a sudden crisis.

• Reluctance to work a previously willing horse starts shutting down, stiffening or protesting without an obvious orthopaedic cause.
• Irritability when tacking up tension around the girth, moving away, pinning the ears back or nervousness during preparation.
• Reduced appetite or fussy eating particularly with hard feed.
• Yawning, lip-smacking and licking outside situations normally associated with relaxation.
• Sensitivity around the abdomen and sternum your horse is reluctant to be touched or groomed.
• A decline in overall appearance a less glossy coat or poorer condition despite apparently similar feeding.

More obvious symptoms

There are also signs that immediately suggest there is no longer room for guesswork.

• Recurring colic of varying severity.
• Weight loss or difficulty maintaining weight.
• Teeth grinding and obvious signs of discomfort.
• Crib-biting or increased stereotypical behaviour in some horses, stomach distress accompanies these behaviours.
• A clear decline in sporting performance without another good explanation.

These symptoms are not specific, however. Myofascial pain, dental problems, parasites, nutritional disorders or excessive training can look similar. A description of behaviour alone is not enough.

If your horse is "acting strangely", avoid guessing. Narrow down the causes with your vet.

Why gastroscopy matters

Gastroscopy remains the most important tool when you want to know whether the stomach lining is damaged, where the lesions are and what type they are. This examination does more than establish whether something is wrong: it also assesses the location and severity of the problem. That changes subsequent decisions.

In practice, this makes an enormous difference. A horse with suspected ulcers treated on a trial basis may look better temporarily, but without a diagnosis it is easy to miss another source of pain or choose an unsuitable management plan. Diet, training changes and supplementation should support treatment rather than replace diagnosis.

Thorough diagnosis saves time, worry and the cost of many unsuccessful approaches. For stomach problems, it is usually the most sensible first step.

A veterinary plan and key management changes

Once the problem has been diagnosed, you need a plan that can be followed every day. I see the best results when you and your vet work together and the yard treats the recommendations as a new standard of care rather than an optional extra.

What to agree with your vet

Medication only makes sense when matched to the diagnosis. Your vet determines the type of treatment, its duration, how to administer the medicine and when to review the results. You should not shorten the course or change the dosage yourself simply because your horse "looks well now".

It is also worth discussing matters that initially seem unrelated to the stomach. These include the training schedule, recent trips, access to grazing, herd behaviour, feeding arrangements and any other medication. These details often explain why the lining lacks the conditions it needs to heal.

Changes that genuinely ease the burden on the stomach

This is more than a superficial adjustment. It means reducing the stomach's daily exposure to irritants.

• Constant access to fibre is best arranged so that your horse has hay available for as long as possible, including overnight. Small-holed haynets help on many yards.
• Fewer hours without food if your horse finishes hay quickly, simply being "fed three times a day" does not make the feeding system safe.
• More time out of the stable paddock turnout and grazing usually improve fibre intake and reduce tension.
• Less social stress a horse constantly chased away from food or isolated from others may have more stomach difficulties than one living more peacefully.
• Thoughtful training intensive work on an empty stomach is a poor combination. Make sure there is fibre in the digestive tract before exercise.
• Care around transport and competitions these days need a dedicated plan rather than improvisation.

A short checklist for you

A simple review of everyday routines works well. Wherever the answer is "no", there is room for improvement.

• Does your horse have hay while the yard is asleep
• Are there no long gaps between meals
• Does the hard feed match actual energy expenditure
• Does training take place with food in the stomach
• Can your horse eat peacefully
• Is the daily routine predictable

The best medicine cannot overcome a management system that irritates the stomach afresh every day.

This is what determines whether recovery of the stomach lining will last or merely be temporary.

The foundation of recovery: a feeding plan

Nutrition does not replace veterinary treatment, but without it treatment very often fails to deliver lasting results. If I had to name the area where you can do the most good day after day, this would be it. Your horse's stomach heals better when the daily diet stops provoking it.

Fibre first, energy second

The first rule is simple. Fibre should form the basis of the diet for a horse with stomach problems. Good hay, calm chewing and as little time as possible with an empty stomach create conditions in which the lining can rebuild.

In practice, I start with questions about hay rather than "which supplement?". What is its quality like? Does your horse have access for most of the day and night? Do they eat calmly? Do they finish everything too quickly? Until this is sorted out, the rest of the plan is merely an addition.

What a safer ration should look like

A good feeding plan for a horse prone to ulcers usually has several features in common:

• Plenty of structural fibre hay remains the foundation, with chaff and high-fibre ingredients added if needed.
• Less starch and simple sugars particularly when your horse receives large cereal meals.
• Smaller hard-feed meals given calmly and spaced sensibly.
• Consistency sudden changes to the mix, feeding times or fibre type often make matters worse.
• Matching the workload a leisure horse and a sport horse should not automatically receive the same ration.

For horses needing hard feed, fibre-based mixes with a safer profile work better than a traditional diet containing plenty of oats. In practice, look at products designed for horses with metabolic and stomach sensitivities, such as SPILLERS Fibre Lite Molasses Free or Hartog Digest. They are not miracle solutions in themselves. Their advantage is that they are easier to fit into a starch-restricted plan while keeping the ration well organised.

The role of chaff and fibre additions

Chaff is often underestimated, yet it can make a substantial difference for the stomach. Well-chosen chaff slows eating, extends chewing and supports saliva production, providing a natural buffer. This is particularly useful before training and when your horse tends to bolt hard feed.

It also works as a practical component of the ration. It helps spread out more concentrated ingredients, improves meal structure and reduces the risk of your horse eating everything too quickly. Chaff containing lucerne suits some horses very well, provided the whole ration is sensibly balanced.

For the stomach, what your horse eats matters, but so do how long they spend eating and their state of mind while doing so.

What I generally do not recommend as a starting point

With an active stomach problem, I approach large cereal meals, randomly chosen "energy" mixes and frequent feed changes cautiously. If your horse needs calories, I first look for better-tolerated feeding options rather than simply increasing starch.

I also dislike the approach where you buy three different protective supplements but your horse still goes several hours without hay. That reverses the priorities.

How to introduce changes without making things worse

The stomach does not like chaos. Therefore:

• Introduce new feeds gradually rather than changing everything in one day.
• Record your horse's response appetite, behaviour at feeding time, droppings and comfort under saddle.
• Do not judge the diet after one day improvement usually comes from consistency rather than a single meal.
• Review the ration as a whole with a professional particularly if your horse competes, loses weight or has other health problems.

At VETfactory, you will usually find the sort of options that help build a safer ration based on fibre, chaff and feeds with a gentler profile for horses with sensitive digestive systems. Choosing a product only makes sense, however, when it fits the whole feeding plan rather than serving as a quick fix.

Supplements supporting stomach healing and protection

Supplements make sense when they have a specific role. They do not "cure everything", but can complement treatment and nutrition well. I usually divide them into three groups: protective, buffering and those supporting the whole digestive tract. Each works differently, so your choice should reflect your horse's individual needs.

Protective supplements

This is the group I most often use to support the main plan. Their role is to create better conditions for the delicate lining and limit contact with irritants. In their ingredients, you will often look for pectins, lecithin, beta-glucans or plant ingredients with protective properties.

This group includes NAF GastriAid and TRM GNF, among others. These are sensible options when your horse is undergoing treatment, returning to work or prone to relapses during stressful periods.

Buffering additions

Buffering supplements have a different role. Rather than coating the lining, they help reduce the effects of acidic contents in particular situations. They are especially useful for sport horses, horses being transported or those experiencing recurring periods of greater demands.

There is an important point here. This is usually no substitute for treatment, and you should not regard such a supplement as permission to make mistakes in the ration or daily routine.

Supporting the microbiota and the whole digestive tract

The stomach does not function separately from the rest of the digestive tract. If your horse has inconsistent droppings, copes poorly with feed changes, makes less use of the ration or has been through a stressful period, take a wider view. Products containing prebiotics, probiotics or ingredients supporting the intestinal environment may make sense in these situations.

Some of you also respond well to more natural approaches to support. In practice, protective ingredients such as aloe vera, linseed, marshmallow and liquorice frequently come up in EGUS management, provided they fit sensibly into the overall plan and are approved by your vet.

Comparing supplements supporting the digestive system

Choosing without overspending or creating confusion

The most common mistake is combining several products with similar actions without checking their ingredients and purpose. Your horse then receives three products "for the stomach", but none is used thoughtfully. It is better to choose one protective supplement, perhaps one targeted addition for stressful periods, and assess the results within a specific plan.

A simple decision-making approach works well:

• If veterinary treatment is ongoing, the supplement should support treatment rather than compete with it.
• If your horse is returning to work, consider protecting the lining and arranging meals around training.
• If the problem recurs during travel, options for high-risk situations matter more.
• If your horse also has unsettled digestion, do not focus exclusively on the stomach.

A good supplement is a tool. A poor feeding and management plan can undo its effects.

Products from TRM, Equine America or AniVero can provide sensible support, but always start by asking exactly what your horse needs. Protection? Buffering? Digestive stability? Or simply less starch and more hay?

Long-term prevention and a review schedule

Once improved, your horse does not automatically return to their "old life". If the old management system caused the problem, it will remain a risk after treatment ends. Prevention therefore means more than giving something occasionally. It means maintaining care that avoids overburdening the stomach every day.

What should become permanent

I see most relapses when, after improvement, you relax the measures that really worked. Long gaps without fibre, larger cereal meals, an empty stomach before work and an irregular routine return.

Keep these permanently:

• priority for fibre in the ration
• a calm, predictable feeding routine
• sensible preparation for training and transport
• monitoring responses to changes of yard, group and competition schedule
• awareness of the first subtle signs

The everyday diet and the diet for higher-risk periods

A good long-term approach separates two levels of feeding. The first is the everyday base diet that keeps stomach conditions stable. The second is a plan for periods of greater demands, when your horse competes, changes location, trains harder or returns to work after a break.

In practice, this "competition diet" need not mean a revolution. More often, it involves better fibre provision, more careful hard-feed management and temporary supplement support. Prepare it beforehand rather than responding only after appetite declines or behaviour worsens.

Monitoring your horse day to day

Daily monitoring does not require complicated spreadsheets. Consistency is enough.

• Watch appetite does your horse finish meals as eagerly as before?
• Notice behaviour around girthing and grooming a small change may precede a decline in performance.
• Look at droppings and comfort after eating the digestive system usually gives several signals at once.
• Record higher-risk periods travel, changing stable, a new batch of hay or increased stress.

Plan veterinary reviews individually with your treating vet. They decide when to assess treatment effectiveness and whether a follow-up gastroscopy is needed. From my perspective, one thing matters most: do not wait until your horse clearly shows pain again.

The best prevention is not a "stronger" product. It is a system giving your horse the conditions to eat calmly, move and recover every day.

This is what a long-term approach involves. We are not looking for a single solution. We are building an environment where recovery of the stomach lining has a chance to last.

If you want a practical feeding plan for your horse's sensitive stomach, explore VETfactory. You will find high-fibre feeds, chaff and supplements from brands such as Spillers, Hartog, TRM, Equine America and AniVero. Seek advice on your selection so it supports your vet's recommendations and your horse's everyday management.