Horse Digestive Supplements

The equine digestive system is surprisingly delicate, and keeping it in balance is key to maintaining health and avoiding digestive upset. Beneficial bacteria that live in the hindgut play a key role in the digestive process, and supporting them with ingredients in digestive supplements, like probiotics, prebiotics, yeast, and enzymes, is a smart way to help your horse manage digestive stress.

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  • $119.95 - $479.95

    SmartSupplements by SmartPak
    Comprehensive support for performance horses
    • Includes SmartFlex III Resilience, SmartDigest Ultra, SmartHoof Ultra & SmartShine Ultra
    • Order in SmartPaks & you may be eligible for $7,500 of colic surgery reimbursement
  • $38.95 - $154.95

    SmartSupplements by SmartPak
    Comprehensive hindgut support
    • Provides clinically studied ingredients, including prebiotics, probiotics, yeast, and enzymes
    • Order in SmartPaks & you may be eligible for $7,500 of colic surgery reimbursement through ColiCare
  • $94.95 - $197.95

    SmartSupplements by SmartPak
    Ultimate support for the entire GI tract
    • Clinically researched gastric & hindgut ingredients
    • Order in SmartPaks & you may be eligible for $7,500 of colic surgery reimbursement through ColiCare
  • $44.95 - $179.95

    SmartSupplements by SmartPak
    Comprehensive hindgut support
    • Provides clinically studied ingredients, including prebiotics, probiotics, yeast, and enzymes
    • Order in SmartPaks & you may be eligible for $7,500 of colic surgery reimbursement through ColiCare
  • $57.95 - $124.95

    SmartSupplements by SmartPak
    Comprehensive senior support
    • Provides the active ingredients of SmartFlex Senior, SmartHoof & SmartOmega 3
    • Nearly 25% savings over buying the three formulas individually
  • $99.95 - $204.95

    SmartSupplements by SmartPak
    Our best senior support
    • Includes SmartFlex Senior Herb-Free, SmartDigest Ultra, SmartHoof Ultra & SmartOmega 3
    • Order in SmartPaks & you may be eligible for $7,500 of colic surgery reimbursement
  • $67.95 - $136.95

    SmartSupplements by SmartPak
    Covers all your bases
    • Provides the active ingredients of SmartFlex II Support, SmartDigest, SmartHoof & SmartShine
    • 25% savings over buying the four formulas individually
  • $99.35 - $525.95

    Freedom Health, LLC
    Supports optimal digestive health
    • Supports a healthy digestive system for optimal appearance, temperament & performance
    • Delivers highly specialized nutrients to support the healthy function of the entire digestive tract
  • $169.95 - $349.95

    SmartSupplements by SmartPak
    Unrivaled support for hard-working horses
    • Includes SmartFlex IV Ultimate, SmartGI Ultra, SmartHoof Ultra & SmartShine Ultra
    • Order in SmartPaks & you may be eligible for up to $7,500 of colic surgery reimbursement
  • $15.95 - $59.95

    SmartSupplements by SmartPak
    Basic hindgut support
    • Probiotics, prebiotics, and digestive enzymes for healthy digestion
    • Ideal for stressed horses, hard keepers, horses on antibiotics, and those with loose stool
  • $84.65 - $184.95

    Med-Vet Pharmaceuticals (MVP)
    Everything he needs for optimal performance
    • High levels of key ingredients for joint, gastric, vascular, hoof, coat & digestive health
  • $13.45 - $44.95

    Vets Plus, Inc Animal Health & Nutrition
    Economical probiotic formula
    • Lactobacillus plantarum, Enterococcus faecium, Lactobacillus casei & Lactobacillus acidophilus
    • The world's most widely recognized, researched & used brand of DFM (direct-fed microbial)
  • $49.95 - $104.95

    SmartSupplements by SmartPak
    Basic support for digestive tract health
    • Includes probiotics, prebiotics, and enzymes from SmartDigest for a healthy hindgut
    • Provides the active ingredients of SmartGut to help soothe your horse?s stomach
  • $115.95 - $234.95

    Helps your horse rest & recover
    • Combines ingredients for joint, tendon & ligament health to support normal healing
    • Herbs help maintain a balanced temperament & researched ingredients aid in managing digestive stress
  • $17.05 - $83.95

    Foxden Equine
    GI tract buffer, re-hydrator, & digestaid
    • Mineral salts, electrolytes, yeast & linseed meal help maintain normal GI function
    • Also contains Diamond V Yeast to aid in fiber and protein digestion
  • $42.95 - $55.25

    Kentucky Equine Research, Inc
    Proven time-released hindgut buffer
    • Acts to attenuate changes in hindgut pH that may result from fermentation of starches in the hindgut
  • $20.25

    SmartPak Equine
    Maintains a balanced digestive tract
    • Includes beneficial bacteria, yeast culture, enzymes & fructooligosaccharides (FOS)
    • Supports the digestive tract by encouraging nutrient absorption & growth of fiber-digesting bacteria
  • $42.80 - $210.95

    Grand Meadows
    Supports all stages of the digestion process
    • Multizyme, a blend of digestive enzymes & glutamine, supports the breakdown of nutrients
    • Shelf-stable Diamond V Yeast & Aspergillus oryzae help maximize bacterial digestion
  • $14.00

    Helps ensure a healthy GI tract
    • Provides saccharomyces cerevisiae, a yeast that supports fiber digestion
  • $7.95 - $142.95

    SmartSupplements by SmartPak
    Supports the hindgut during times of stress
    • Includes prebiotics, probiotics, digestive enzymes & to support a healthy hindgut
    • Great for use during hay or grain transitions, travel & showing
  • $9.95

    Vets Plus, Inc Animal Health & Nutrition
    Treats with digestive support
    • Treats specially formulated to support healthy digestion
  • $29.95

    Cytozyme Laboratories, Inc
    Helps maintain digestive efficiency
    • Unique formula is a liquid lactobacillus fermentation product
    • Vets around the world report that Ration Plus safely helps maintain maximum digestion efficiency
  • $10.95 - $196.95

    SmartSupplements by SmartPak
    The support he needs for optimal performance
    • Includes probioitcs & prebiotics for digestive health, plus electrolytes & antioxidants
    • Ideal for helping your horse cope with the demands of trailering, competing, and other stresses

Everything you need to know to help keep your horse's digestive system balanced and healthy.

What is colic?

Colic is a general, catch-all term used to refer to any sort of abdominal pain in horses (in layman's terms, it's a belly ache). While some cases may be so mild that you don’t even notice, a severe case of colic is a medical emergency. In fact, colic is responsible for more deaths in horses than any other condition.

Yikes! What can I do?

The best thing you can do for your horse is get educated (this article is a great place to start!). Knowing the risk factors can help you make smart management and dietary changes. Learning the warning signs can help you catch an episode early on, improving your horse’s chances of recovery. Last but not least, there are several supplement ingredients that have been clinically studied for their effect on digestive health.

Is my horse at risk?

The following risk factors have been proven* to increase a horse’s chances of experiencing a colic episode.

RISK: Increased stall time

A sudden increase in stall time, like an injured horse put on stall rest, can cause disruptions in normal digestive processes.

Smart Tip:

Maximize turnout time to keep your horse moving (and ideally grazing) to support normal gut motility. If you can’t turn out, try hand-walking and hand-grazing to mimic that natural meandering behavior.

RISK: Hay and grain changes

Changing your horse’s grain (type or amount) increases his risk of colic up to five times, while changes in hay increase the risk of colic a startling 10 times!

Smart Tip:

Keep your horse’s diet as consistent as possible. If you have to change feed or hay, make the change as gradually as you can (ideally over 7-10 days), and look for a digestive health supplement with yeast, probiotics and enzymes, which help keep the microbes of the hindgut happy during feed transitions.

RISK: Parasites

Heavy parasite loads may cause intestinal inflammation, predisposing horses to GI disturbance.

Smart Tip:

Keep your horse on a deworming program tailored to his individual needs.

RISK: Change in activity level

Changing your horse’s exercise routine (whether increasing or decreasing workload) has been linked to digestive upset.

Smart Tip:

Once again, it’s best to make changes as slowly as possible, and consider adding a digestive health supplement for support.

RISK: Ingesting sand

Horses turned out on sandy soil can accidentally take in sand, which builds up in the horse’s digestive tract and may cause loose stool and other digestive upset.

Smart Tip:

Research shows providing psyllium together with probiotics and prebiotics (like the combination in SmartSand Purge improves fecal sand clearance.

RISK: Dehydration

Healthy hydration is essential for healthy digestion. Without adequate water intake, horses may be at a greater risk for GI trouble, including impaction.

Smart Tip:

Make sure your horse always has clean, fresh water. If he’s a poor drinker or heavy sweater, add salt or an electrolyte like SmartLytes® Pellets. *Cohen ND, Factors predisposing to colic, 8th Congress on Equine Medicine and Surgery, 2003 White NA, Equine Colic II: Causes and risks for colic, 52nd Annual Convention of AAEP, 2006.

Research shows that...

...prebiotics can reduce disruption in the cecum and colon and inhibit the absorption of harmful bacteria in the hindgut. ...digestive enzymes can increase the proper digestion of sugars and starches in the foregut, reducing the incidence of hindgut acidosis (which may lead to colic and laminitis). ...yeast can improve fiber digestion and assist the beneficial bacteria of the cecum in adjusting to feed changes.

Warning signs of colic

Tell-tale signs of potential GI upset: • Pawing • Looking at, kicking or biting abdomen • Repeatedly lying down and getting up • Sitting in a dog-like position or lying on the back • Lip curling (Flehmen response) • Lack of bowel movements • Reduced or absent gut sounds • Not eating or drinking • Stretching out as if to urinate • Elevated respiratory rate • Elevated heart rate

Meet Kara and Grand Slam "Homer"


Name: Grand Slam "Homer"
Breed: Dutch Warmblood
Age: 16
Discipline: Hunter/Jumper
Owner: Kara Jackson


"After moving Homer to a new barn, I noticed he wasn’t acting like himself. Because of the stress that comes from a new barn, new hay and a new training program, we decided to support Homer’s digestive system with SmartDigest Ultra. Within a week we saw a difference in his appetite and demeanor. I feel that proactive care is important so this supplement will continue to be part of his program. I also take comfort in knowing that thanks to ColiCare, I may be eligible for $7500 of colic surgery reimbursement should Homer need it."

Kara-and-Homer_2 Kara-and-Homer_4
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Mollie and Eden
I started riding when I was 9 years old and quickly got swept up into the competitive hunter/jumper world. I showed my first pony, Chloe, in the Small Pony Hunter divisions were we competed at shows like Fairfield Hunt Club, Old Salem, HITS, and West...

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SmartPak Barn Field Trip, Part 2: Decoding hay and grain for horses
Download the worksheet to test your knowledge! How much hay and grain does your horse get every day? How much SHOULD your horse be getting each day? Many horses may not be getting what your feed bag recommends, so we’re

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