A healthy digestive system is the foundation of every horse's wellbeing. From the foregut to the hindgut, the equine digestive tract is a delicate, complex environment that thrives on balance. When that balance is disrupted — through stress, travel, diet changes, or medication — horses can experience discomfort, reduced nutrient absorption, and behavioural changes.
For centuries, horse owners have turned to botanicals to support digestive function naturally. Modern equine herbalism blends traditional knowledge with careful feeding practice. This guide explores herbs traditionally fed to support normal digestive comfort, and how to introduce them responsibly.
The Equine Digestive System at a Glance
Horses are hindgut fermenters, meaning the bulk of fibre digestion and nutrient absorption happens in the caecum and large colon. This makes the hindgut microbiome — the community of beneficial bacteria — absolutely critical to health.
Disruptions such as high-grain diets, sudden pasture changes, antibiotics, or stress can alter the microbiome, leading to discomfort or loose droppings. Changes like these deserve careful management and, where persistent, veterinary advice. Botanicals may be part of a routine supporting normal digestive comfort.
Key Botanicals for Digestive Support
Peppermint
Mentha × piperita
Palatable aromatic herb, traditionally fed for digestive comfort.
Peppermint is one of the best-known digestive herbs for horses. Its aromatic oils are traditionally associated with a settled gut, and many horses find the taste highly palatable, making it an easy addition to daily feed.
Marshmallow Root
Althaea officinalis
Mucilage-rich root, traditionally fed for normal digestive comfort.
Marshmallow root is rich in mucilage, a gel-forming material that gives the herb its long-standing soothing reputation in herbal traditions. It is fed as gentle botanical support for normal digestive wellbeing, often around dietary change, travel or box rest. Traditional use is not proof of a clinical effect, and marshmallow leaf is a separate product with a milder mucilage profile and its own feeding guidance.
Chamomile
Matricaria chamomilla
Traditionally fed to support settled behaviour and digestive comfort.
Chamomile has a long traditional use where owners want gentle support for settled behaviour, and it is often chosen for horses that seem unsettled around routine changes. It is fed as everyday support alongside good management, not as a treatment.
Fennel
Foeniculum vulgare
Traditionally fed to support normal digestive comfort.
Fennel seeds have been included in botanical feeding routines for generations. Their aromatic flavour appeals to some horses, and they are traditionally chosen as part of a routine supporting normal digestive comfort.
Slippery Elm
Ulmus rubra
Traditionally fed to support normal digestive comfort.
Like marshmallow root, slippery elm contains mucilage. It has a long history of traditional feeding to support normal digestive comfort. Ask your vet about ongoing digestive concerns.
Milk Thistle
Silybum marianum
Traditionally fed to support normal liver function.
The liver plays a central role in processing nutrients and producing bile. Milk thistle contains silymarin and has a history of traditional use in feeding routines supporting normal liver function. Seek veterinary advice if your horse has a diagnosed liver condition.
Feeding Guidance
Botanicals can be fed dried, powdered, or as part of a blended supplement. When introducing any new herb, start with a small amount and build up gradually over 7–10 days. This allows the digestive system to adjust and reduces the risk of initial sensitivity.
- Introduce gradually: Begin with half the recommended serving for the first week.
- Feed consistently: Follow the product's feeding guide and review your horse's normal wellbeing alongside their broader routine.
- Check competition rules: If your horse competes under FEI or national rules, confirm that all ingredients are permitted.
- Consult your vet: Botanicals complement, not replace, veterinary care. Seek professional advice for persistent digestive issues.
When to Call the Vet
While botanicals may support normal wellbeing, digestive symptoms can require prompt veterinary attention. Contact your vet promptly if your horse shows any of the following:
- Persistent or severe colic pain
- Diarrhoea lasting more than 24 hours
- Significant loss of appetite or weight
- Blood in droppings or excessive saliva
- Signs of dehydration or lethargy
Digestion and winter management
Winter usually changes the things a horse's gut relies on most: less grass and more hay, shorter turnout, altered workload and sometimes a different hard feed. Those changes are worth making slowly and steadily. Keep forage in front of the horse, make feed changes over a week or more where you can, encourage water intake with damp feeds and unfrozen troughs, and keep an eye on droppings and condition under rugs.
Herbs sit alongside that management rather than replacing it. It is worth keeping the two kinds of advice separate: a supplement is fed to support normal digestive wellbeing, while colic signs, weight loss, recurring discomfort or a change in droppings are veterinary matters and need your vet, not a change of herb. Our winter herbal support guide covers the wider seasonal routine.
Frequently asked questions
Can digestive herbs treat ulcers or colic?
Which horses benefit most from digestive support herbs?
Can I feed digestive herbs alongside a prescribed medication?
How quickly will I see results?
Ready to support your horse's digestive health?
Our botanical supplements are hand-finished in small UK batches, formulated with the same herbs discussed in this guide.