Centaur Animal Health

business focus has been concentrated in adaptations of proven new technology -- with special

Got a horse with gut disturbances and want biotech-developed proven formulas?

Reviewed by Ann Pruitt, InfoHorse.com · Updated April 2026

business focus has been concentrated in adaptations of proven new technology -- with special emphasis in biotechnology -- converting successes from the human healthcare market to help similar problems in the animal health markets. Centaur’s first products were concentrated in the equine market, and focused on diagnostic technologies that were representative of ‘breakthrough innovations’.

Centaur Animal Health

Egusin SLH® and Egusin 250®by Centaur Animal Health

Egusin SLH® for horses exhibiting gut disturbances and Egusin 250® to maintain a healthy gut -by the decicated team at CENTAUR Animal Health

Who Is Centaur Animal Health?

Since it was founded in 1986, Centaur Animal Health business focus has been concentrated in adaptations of proven new technology -- with special emphasis in biotechnology -- converting successes from the human healthcare market to help similar problems in the animal health markets. Centaur’s first products were concentrated in the equine market, and focused on diagnostic technologies that were representative of ‘breakthrough innovations’. One such product is the Equine Infectious Anemia (EIA) diagnostic that was adapted from the human Aids test and for which a patent was granted in 1995.

Centaur Animal Health and United Agriculture and Veterinary Products, Inc. (Unavet) were two separate Kansas City based animal health businesses that have been operational since the mid 1980’s. Both companies had been engaged in sales activity in separate but complimentary segments of the animal health market. The merging of the two existing companies in 2001 provided efficiencies and growth opportunities available that would not have been available to either company individually.

Does Your Horse Have The Digestive Support Necessary To Maintain Top Health And Feed Utilization?

The digestive tract has often been referred to as the "engine" of the horse. It is the engine that supplies the power-- without an effective and well operating engine, you just won't go anywhere-- and it works very similarly with your horse.

About EGusin SLH® and Egusin 250®
These two great products from Centaur Animal Healthare natural feed supplements which have been demonstrated to be beneficial in promoting a healthy stomach and an aid in preventing the destruction of the stomach lining. Egusin® is not a pharmacological solution that might interfere with normal gastrointestinal function. Egusin® is a combination of ingredients that collectively work together to return the stomach to normal function.

Egusin® SLH Assists Horses Already Experiencing Gastric Disturbances!

Is your horse already showing signs of gastric distress? Biting at their sides over and over? Irritable during cinching up the saddle? Laying down right after eating hay? Dunking their hay in water before eating? All of these may be a signal that your horse is experiencing gastric upset or disturbances! Egusin® SLH was formulated to help horses (and the owners that worry about them!) that are already experiencing gastric disturbances. Egusin® SLH is a pelleted combination of natural ingredients that has been demonstrated to be beneficial in addressing the primary causes of equine gastro-intestinal disturbances.

Egusin® 250 Helps Horses Maintain A Healthy Gut!

Every horse depends upon a healthy gut to maintain a good digestive and immune system. Once you have helped to restore the health and well being of your horse's digestive tract, Egusin® 250 is specially designed to help you Maintain that healthy gut! It is an alfalfa pellet based formulation of natural ingredients that has been demonstrated to be beneficial in promoting a healthy stomach and intestinal environment to avoid recurring gastro-intestinal disturbances in horses

So.... What Is The Egusin® Concept?

Egusin consists of two types of stabilizing dietetic feed supplements for adult horses, young horses and foals suffering from Egus, stress periods and an imbalance in the intestinal system due to a high production of excess gastric acid.

Note:The Egusin® concept is based on a unique combination of active nutraceuticals, neutralizing excess gastric acid, protects the stomach lining and preventing the formation of “stress stomach” which can result in loose stools and signs of stomach discomfort-- something that all horse owners fear and watch for!

What Does The Egusin Concept Include?
The Egusin concept consists of two types of stabilizing dietetic feed supplement:

* Egusin® SLH- used as the first dietetic feed when “stress stomach” is observed-- in other words, gastric distress is already apparent.
* Egusin 250®- used as a “second follow diet” to maintain proper stomach function

Why Do We Use Whole Oat Groats?

Whole oat groats functional value:

Beneficial dietetic fibers and nutritional components
Beta-glucan- gels in the stomach, acting as a coating for the stomach lining.
Insoluble oats fibers- delay the stomach emptying which aids in preventing gastrointestinal disorders.
Polar lipids- rich phospholipids aid in re-establishing the stomach lining.
Natural antioxidants- aid in protecting the muscle cells from degradation by the free radicals.

How Does Egusin® Work?

Antacids neutralize excess corrosive gastric acid to protect the stomach lining against destruction. Lecithin, a phospholipid, restores damaged cell membranes. Pectin acts as a barrier under which the gastric mucosa membranes are allowed to heal. Natural antioxidants protect the cells from destructive free radicals.

Micro-milled whole oats also interact with stomach acid forming a gel to augment the protective barrier provide by Pectin. The oat fibers also delay gastric emptying so acid has something to act on besides the lining, and act as a substrate to carry away toxins and bacteria. Egusin® may be administered 3-5 days before, through, and during the return from an event to assure the stomach maintains normal function.

What If My Horse Is Displaying Real Stomach Distress?

If there is acute stomach distress, try one bucket of Egusin SLH® sufficient for 21 days, then rotate over to the Egusin 250®, to maintain the health. If a horse resumes normal foraging, Egusin®, may be discontinued. Some customers have reported the need to resume use possibly due to the long standing effects of chronic stomach lesions. Egusin SLH® and Egusin 250® do more, work faster, and cost considerably less, than other products.

What Customers Say

My 13 yr. old TB gelding just finished his second week on Egusin SLH, and the product is already living up to and exceeding expectations. My horse had been subjected to many acute and chronic stressors that are known to cause ulcers (i.e. extended periods of stall confinement/lack of adequate for several years, a recent move to a new farm, and then a 6-8 week bout of rapid weight loss from an insufficient feeding regimen).

Who is Centaur Animal Health?

Founded in 1986 and based in Olathe, Kansas, Centaur Animal Health develops innovative diagnostics, pharmaceuticals, and nutraceuticals that address significant therapeutic needs for companion and production animals. The company's hallmark is translating proven human-healthcare and biotechnology breakthroughs into the animal-health market, licensing and developing patent-protected technologies sourced from leading pharmaceutical and biotech partners. That research-driven heritage is why barrel racers and performance-horse owners trust the Centaur name on their feed-room shelf.

Egusin SLH front of bag stress stomach pelleted gastrointestinal supplement for horses by Centaur Animal Health

What is the Egusin® gastric support line?

Centaur's flagship equine products are Egusin 250® and Egusin SLH®, two alfalfa-pellet-based gastrointestinal supplements built to address the primary causes of equine gastric disturbances. Egusin 250® ($107.00, 14 lbs, SKU 090210) is an alfalfa pellet based formulation of natural ingredients demonstrated to promote a healthy stomach and intestinal environment and help avoid recurring gastro-intestinal disturbances in horses. Egusin SLH® ($130.00, 14 lbs, SKU 090110) is the higher-strength "stress stomach" formula targeting horses under the most demanding training and hauling loads.

Centaur Egusin SLH pelleted equine gastrointestinal supplement product image

How does Egusin® protect a hard-working stomach?

The Egusin® formulas work through four coordinated mechanisms rather than a single antacid hit. Antacids deliver instant and sustained neutralization of corrosive gastric acid; lecithin and polar lipids coat and help re-establish the gastric mucosal lining; insoluble oat fiber (ß-glucan) plus dietetic soluble fibers stabilize stomach and colon function; and dried apple pectin binds toxins that can contribute to loose manure. In a published trial, horses treated with Egusin® showed improved squamous ulcer scores versus untreated controls after 35 days of stall confinement.

Centaur Animal Health Olathe Kansas facility location map

What's inside the pellet?

Egusin SLH® is built from micro-milled whole oats (groats), lecithin, dehydrated alfalfa meal, dried apple pectin pulp, dextrose, sodium bicarbonate, Lithothamn (calcareous marine algae), yeast, fenugreek seed meal, magnesium oxide, and calcium propionate as a preservative. Both Egusin® products combine pectin and fruit-derived ingredients, lecithin, sodium bicarbonate, calcium bicarbonate, dehydrated alfalfa, insoluble oat fiber, polar lipids, and natural antioxidants. It is an easy-to-administer, no-waste top dress mixed into feed concentrate that horses willingly eat.

Why barrel racers reach for Egusin®

Speed events stack every known ulcer trigger onto one horse: trailer miles, show-pen adrenaline, grain-heavy rations, and stall confinement away from home. Egusin® is formulated for exactly that performance population, supporting appetite, demeanor, and topline in horses whose stomachs take a beating between runs. Because it tops onto existing feed, it slots into a barrel string's routine without paste-fighting or schedule disruption on haul days.

How to order from Centaur Animal Health

Order Egusin® direct from the Centaur Animal Health online store at centauranimalhealth.com, or by. The company ships from its FDA- and DEA-certified facility at 1351-F W. Highway 56, Olathe, KS 66061 (the 2nd left turn / driveway just west of Lone Elm Road), and the same plant offers contract and custom manufacturing. Product questions and orders can also be sent to.

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The Solution Section (FAQ)

What makes Centaur Animal Health different from other options?

It is the engine that supplies the power-- without an effective and well operating engine, you just won't go anywhere-- and it works very similarly with your horse. About E GUSIN SLH and EGUSIN 250 These two great products from Centaur Animal Health are natural feed supplements which have been demonstrated to be beneficial in promoting a healthy stomach and an aid in preventing the destruction of the stomach lining.

How does Centaur Animal Health help horses or owners?

NOTE: The Egusin concept is based on a unique combination of active nutraceuticals, neutralizing excess gastric acid, protects the stomach lining and preventing the formation of stress stomach which can result in loose stools and signs of stomach discomfort-- something that all horse owners fear and watch for!

How do you use Centaur Animal Health?

Does Your Horse Have The Digestive Support Necessary To Maintain Top Health And Feed Utilization? It is the engine that supplies the power-- without an effective and well operating engine, you just won't go anywhere-- and it works very similarly with your horse.

How did Centaur Animal Health get started?

The only time he got completely better was when he was living on a 100% complete feed program while he was being started by a trainer. But I wanted to feed him grass hay and pasture and assimilate him in with my other horses.

What is Egusin 250® and what does it do?

Egusin 250® is an alfalfa pellet based formulation of natural ingredients from Centaur Animal Health, demonstrated to be beneficial in promoting a healthy stomach and intestinal environment to help avoid recurring gastro-intestinal disturbances in horses. It works by neutralizing gastric acid, coating and protecting the stomach lining, stabilizing intestinal function, and promoting intestinal absorption. It is designed as a maintenance and prevention product for horses prone to digestive upset.

How is Egusin SLH® different from Egusin 250®?

Egusin SLH® is Centaur's higher-strength formula aimed at 'stress stomach,' built for horses under the heaviest training, hauling, and competition loads. Egusin 250® is positioned more toward prevention and ongoing maintenance of a healthy gastric environment. SLH® retails at $130.00 for a 14 lb supply (SKU 090110), while Egusin 250® is $107.00 for 14 lbs (SKU 090210).

What are the ingredients in Egusin SLH®?

Egusin SLH® contains micro-milled whole oats (groats), lecithin, dehydrated alfalfa meal, dried apple pectin pulp, dextrose, sodium bicarbonate, Lithothamn (calcareous marine algae), yeast, fenugreek seed meal, and magnesium oxide, with calcium propionate as a preservative. Together these provide antacids, mucosal-coating lipids, soluble and insoluble fibers, and natural antioxidants. The whole-oat and alfalfa base also makes the pellet highly palatable.

How does Egusin® help with equine ulcers?

Egusin® uses four mechanisms working together: antacids for instant and sustained neutralization of corrosive gastric acid; lecithin and polar lipids to coat and help re-establish the gastric mucosal lining; soluble and insoluble (ß-glucan oat) fibers to stabilize stomach and colon function; and pectin to bind toxins. In a published trial, horses treated with Egusin® showed improved squamous ulcer scores compared with untreated controls after 35 days.

Is there research supporting Egusin®?

Yes. A published veterinary study examined the effect of pectin, lecithin, and antacid feed supplements (Egusin®) on gastric ulcer scores, gastric fluid pH, and blood gas values in horses. Horses treated with the Egusin® supplements showed improvement in squamous ulcer scores compared with untreated controls after 35 days of treatment in stall-confined horses. This reflects Centaur's research-driven, science-first approach to product development.

How do you feed Egusin® to a horse?

Both Egusin 250® and Egusin SLH® are designed as an easy-to-administer, no-waste top dress that is mixed into the horse's feed concentrate. Because the pellets are built on a palatable whole-oat and alfalfa base, horses willingly eat them, avoiding the paste-fighting common with other gastric products. This makes it convenient to keep horses on the supplement even on busy haul and show days.

How much does Egusin® cost?

On the Centaur Animal Health store, Egusin 250® is priced at $107.00 for a 14 lb bag (SKU 090210), and Egusin SLH® is $130.00 for a 14 lb bag (SKU 090110). Pricing is listed directly on centauranimalhealth.com, and you can also order by phone at 913-390-6184. Prices are set by Centaur and may also be carried by equine retailers.

Why is Egusin® a good fit for barrel racing horses?

Barrel racing concentrates nearly every ulcer trigger into one horse: trailering, the adrenaline of the run, grain-rich performance rations, and time spent stalled away from home. Egusin® is formulated for exactly this high-stress performance population, supporting a healthy stomach and intestinal environment so horses maintain appetite, demeanor, and condition between runs. Its top-dress format fits cleanly into a barrel string's daily routine.

Who makes Egusin® and where are they located?

Egusin® is made by Centaur Animal Health, an animal-health company founded in 1986 and based at 1351-F W. Highway 56, Olathe, KS 66061. The location is the 2nd left turn (driveway) just west of Lone Elm Road. The company manufactures in an FDA- and DEA-certified facility.

How can I contact Centaur Animal Health?

You can reach Centaur Animal Health by phone at 913-390-6184 or by email at [email protected]. Products can be ordered through the online store at centauranimalhealth.com. The mailing and shipping address is 1351-F W. Highway 56, Olathe, KS 66061.

What other products does Centaur Animal Health make?

Beyond the equine Egusin® line, Centaur offers pharmaceuticals such as 1% Iodine Wound Spray, 7% Stronger Iodine Tincture, isopropyl alcohol (70% and 99%), mineral oil, and OB Lube; diagnostics including methylene blue and ovum flotation solution; the FP Elisa II diagnostic test for Equine Infectious Anemia; and dairy products like propylene glycol. The company spans diagnostics, pharmaceuticals, and nutraceuticals for both companion and production animals.

Does Centaur Animal Health do custom manufacturing?

Yes. Centaur offers contract and custom manufacturing in its FDA- and DEA-certified facility. The company licenses and develops patent-protected technologies sourced from animal-health and human pharmaceutical and biotechnology companies, then manufactures finished products at scale. This contract-manufacturing capability is a core part of the business alongside its branded equine and diagnostic lines.

What is 'stress stomach' in horses?

'Stress stomach' is the term Centaur uses for the gastric disturbances that develop when horses face stressors like intense training, travel, competition, and confinement. These conditions raise gastric acid exposure and can damage the stomach lining, hurting appetite, attitude, and performance. Egusin SLH® is specifically formulated to address stress stomach, while Egusin 250® focuses on preventing recurring gastro-intestinal disturbances.

What role does lecithin play in Egusin®?

Lecithin and polar lipids (phospholipids) in Egusin® help protect the gastric mucosal membranes and aid in re-establishing the stomach lining. They form a protective coating that works alongside the product's antacids and fibers. This lipid-protection component is one of the four pillars of the Egusin® mechanism, complementing acid neutralization, fiber stabilization, and toxin-binding pectin.

What is the company's background and philosophy?

Centaur Animal Health was founded in 1986 with a business focus concentrated in adaptations of proven new technology, with special emphasis on biotechnology, converting successes from the human healthcare market to help similar problems in the animal health markets. Centaur's first products were concentrated in the equine market and focused on breakthrough diagnostic technologies. Today the company develops innovative diagnostics, pharmaceuticals, and nutraceuticals for companion and production animals.

Is Egusin® safe to use long-term as a daily top dress?

Egusin® is formulated from natural, feed-grade ingredients such as alfalfa, whole oats, apple pectin, lecithin, and antacids, and is designed as a daily top-dress feed supplement rather than a short-course drug. Centaur provides a product brochure, facts sheet, and Safety Data Sheet (SDS) for download to support proper use. As with any supplement program, owners should follow label directions and consult their veterinarian for horses with ongoing gastric concerns.

Where can I buy Egusin® besides the Centaur website?

Egusin 250® and Egusin SLH® are sold directly through the Centaur Animal Health online store and by phone at 913-390-6184, and they are also carried by equine retailers and supply outlets. Buying direct ensures current pricing ($107.00 for Egusin 250®, $130.00 for Egusin SLH®) and access to Centaur's product documentation. For bulk or contract inquiries, contact [email protected].