customized deworming plan

Finally, a colic supplement and digestive aid that is so effective that it actually comes with

Want a colic and digestive supplement that comes with a money-back protection policy?

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

Assure Guard Gold all-in-one equine digestive supplement front of container

customized deworming plan

Assure and Assure Plus " Assurance Program" by Equine Research Associates
Finally, a colic supplement and digestive aid that is so effective that it actually comes with a protection policy to guarantee success when used with a worming program.

Assure With GST
This highly palatable, granulated product is designed to be top dressed on your horses feed either once or twice per day. Assure immediately begins your horse on the path to Gastro Intestinal Stabilization and increased performance. Its unique Gastro Intestinal Stabilizing Technology GST combine the worlds most effective Pre and Probiotics including a rich source of mannanoligosaccharides, glucomanno-proteins and Saccharomyces cerevisiae, yeast culture. Assure is formulated with the optimal blend of direct fed microbials and microbial by-products, to provide the maximum in gastro intestinal stability and health. By feeding Assure with GST you will:

1 Reduce The Risk of Colic

2 Stabilize the gastro intestinal microbial population

3 Enhance and increase the quantity of beneficial bacteria

4 Reduce the quantity of "Bad" (pathogenic) bacteria

5 Fight acid build up, thereby raising and improving the ph

6 Reduce bacterial toxins

7 Improve Colonic motility

8 Reinforce nutrient production and absorption

9 Decrease feed intake

10 Reduce the negative effects of Non-Steroidal Anti Inflammatory Drugs (NSAID's) and Antibiotics

11 Control Diarrhea

With these improvements in his digestive tract your horse will look and feel his best! For horses on a high volume of concentrated rations, greater than 8 pounds per day, maximal benefits will be seen with 2 times per day dosing (one dose with each meal).

Assure Plus With GST
This pelleted product was designed to work in concert with Assure. Its amazing sand clearance ability is powered by GST. This is the most effective sand clearance product ever devised. By combining the sand removing properties of 99.5% whole blond psyllium with the motility enhancement of Assure and GST, sand and early enterolith formation in your horses colon can be a thing of the past. So, if your horse grazes on dry pasturelands, snuffles around in either dirt or sand for every last morsel of feed, or has ever tested positive for sand in his feces, Assure Plus is one component of the system he cannot afford to be without. These highly palatable and extremely effective pellets are designed to be fed either with or without plain Assure as a compliment. The Assure System calls for feeding Assure Plus one week out of every month for basic sand elimination. For horses just starting the program, a 5 weeklong Power Clearance Plan is recommended.

How Do I Know Which Product To Choose?

If your horse is susceptible to sand accumulation, Assure Plus has amazing sand clearance ability, is powered by GST, and would be the best choice for you. This is the most effective sand clearance product ever devised. By combining the sand removing properties of 99.5% whole blond psyllium with the motility enhancement of Assure and GST, sand in your horses' colon and the risks of sand colic can be a thing of the past. So, if your horse grazes on dry pasturelands, snuffles around in either dirt or sand for every last morsel of feed, or has ever tested positive for traces of sand in his feces, Assure Plus is one component of the system he cannot afford to be without.

Do I Need To Continue My Deworming Program?

Absolutely. A key component to any complete digestive health program is an excellent deworming program-Not an excellent dewormer, but a deworming program that incorporates all of the latest research regarding internal parasite control. There is no single dewormer that will eliminate all of the species of internal parasites attacking your horses digestive and cardiovascular system. To eliminate of all of these species and formulate a program that is evolutionary requires constant knowledge and research into the best deworming products on the market.

1. Age of the horse
2. Condition of the horse
3. Time of year
4. Geographic location
5. Dewormer efficacy
6. Dewormer specificity
7. Parasite resistance

What Are Customers Saying About The Assure System?

Customers are raving about the revolutionary Assure System! You can read their stories and be amazed at the transformations that have taken place in these horses and their owners lives. You will read about Shalaine Henshaw and her horse Ashton who had unrelenting pain from colics and according to Shalaine " would not be with her today if it weren't for The Assure System." Read her stories and others at our website as well as add your own Assure System Success story!

The Assurance Protection Plan
Maintain your horse on The Assure System and not only will you be buying products with the strongest guarantee possible; our "No Question Money Back Guarantee", but while using the products your horse will be covered with $7,500 worth of colic surgery assistance funds, for any of the covered forms of colic!

You can order your paste dewormers custom selected for your horse and sent directly from our warehouse with your delivery. Our deworming package will include at least six recommended paste dewormers, and a schedule of administration. The deworming package will take you through a complete year of parasite reduction. Or, if you prefer we will send only the information and latest recommendations with your order, of Assure and Assure Plus. You will get a complete planning guide for the year. Yes, if you would prefer to buy your horses deworming products locally we will send you a customized deworming plan absolutely Free with your order, just ask your sales representative.

I Have More Questions, Where Can I Learn More?
We know you have lots of questions, that's why we created a special area on our website designed to answer your specific questions on this product. Should you find a question not readily available on the site, please don't hesitate to call or send us an email.

Free Colic Information Report
In addition to our Frequently Asked Questions our veterinary staff has helped author an 8-page colic information report. This report not only gives you information about The Assure System but also supplies you with the latest facts about colic and your horse.

How Do I Order The Assure System?

Call And Order The Assure System Today!
The Assure System is different then any other digestive aid or supplement available today, because it works and we're willing to pledge that fact by offering The Assurance Program, surgical protection, to guarantee its quality. If your horse is suffering from Colic or if you want to prevent your horse from colic, this product is perfect for you. Order today for the health and happiness of you and your horse.

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Finally, a colic supplement and digestive aid that is so effective that it actually comes with a

What is the Assure Assurance Program?

The Assurance Program — known today as the Colic Assurance Program (CAP) — is a digestive-wellness plan that backs the Assure® line of supplements with a colic-cost guarantee. Horses placed on a customized Assure regimen become eligible for up to $15,000 in lifetime reimbursement for both medical and surgical colic episodes, covering farm calls, in-hospital visits, diagnostics, and trip charges. It is the rare colic supplement that comes with a written protection policy, rewarding owners who keep their horse on a proven digestive program. Enrollment is free of charge with the purchase of qualifying Assure products.

Assure Guard Gold pelleted horse digestive aid 25 lb size

Who makes Assure and Assure Plus?

The Assure® System was originally developed by Equine Research Associates and is now produced and supported by Creative Science and Arenus® Animal Health. The company describes its formulas as scientifically developed, veterinarian-approved, and clinically tested, crediting that research base for "thousands of colic free horses over the years." Customer service for the program and the products is reachable at or. The same team stands behind Assure®, Assure® Plus, Assure® Guard, and the all-in-one Assure® Guard Gold.

Assure Guard Gold equine colic and ulcer support supplement packaging

What goes into the Assure System

Assure With GST is a highly palatable, granulated product designed to be top-dressed on a horse's feed, while Assure Plus delivers a concentrated psyllium boost in pelleted form (soluble fiber minimum 71.4% per dose). Across the system you'll find psyllium seed husk, a blend of pre- and probiotics — Saccharomyces cerevisiae, Lactobacillus acidophilus, and Enterococcus faecium — plus digestive enzymes (protease, alpha-amylase, cellulase), brewer's dried yeast, and a calcium-carbonate gastric buffer. Assure® Guard Gold also adds deglycyrrhizinated licorice root powder and carries no added sugars, making it appropriate for metabolic horses.

Assure Guard Gold sugar-free psyllium and probiotic horse supplement

How the colic supplement and worming program work together

The Assure System supports the entire digestive tract from the stomach through the hindgut, targeting recurrent gastric or colonic ulcers, abdominal discomfort, loose stool, and sand accumulation. To keep coverage active, enrolled horses follow a veterinarian-directed wellness routine that pairs the supplement with a real parasite plan — at least two deworming administrations and one fecal egg count test per year, plus an annual physical, dental exam, and vaccinations by a licensed veterinarian. A field trial reported 90% of recurrent colic cases, 100% of sand-accumulation cases, and 94% of weight-loss or poor-body-condition cases resolved on the Assure Guard and Assure Plus combination. Many owners report seeing digestive relief in as little as one week.

Who the program serves

Any horse that is weaned and at least 5 months of age and resides in the USA or Canada is eligible, including geriatric horses, horses with a prior colic history, and horses recovering from colic surgery — animals that competing programs often disqualify. It fits performance horses in training, competition, or high-stress environments as readily as retirees on chronic digestive management. You may enroll as many horses as you like at no additional cost, and coverage even extends to international travel. Miniature horses, donkeys, mules, and similar equids are not yet eligible while dosing research is pending.

How to enroll and buy

Enrollment follows three steps: complete the online form for each horse and receive a qualification notice within 5 business days; place your initial order for the assigned Assure System products within 5 days of receiving your wellness plan; then start the loading dose to activate coverage. Qualifying products must be purchased either 48 hours before submitting the enrollment form or within 5 days after acceptance. Assure® Guard Gold ships in 16 lb (55 servings) and 25 lb (85 servings) sizes; Assure® Plus comes in 7.5 lb, 15 lb, and 25 lb tubs. Reach the team at or to get started.

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The Solution Section (FAQ)

How Do I Order The Assure System?

We are open 24 hours and 7 days a week ready to take your order over the phone! Our friendly customer service representative will assist you in purchasing the products and quantities that are right for you and your horse. Beginning in 2007 shop at our online store or via the phone. Once you order you can enroll in our autoship plan so you will receive a fresh supply every four months to make sure you're never without this amazing product! Call And Order The Assure System Today! The Assure System is different then any other digestive aid or supplement available today, because it works and we're willing to pledge that fact by offering The Assurance Program, surgical protection, to guarantee its quality. If your horse is suffering from Colic or if you want to prevent your horse from colic, this product is perfect for you. Order today for the health and happiness of you and your horse.

How Do I Know Which Product To Choose?

Do I Need To Continue My Deworming Program?

I Have More Questions, Where Can I Learn More?

We know you have lots of questions , that's why we created a special area on our website designed to answer your specific questions on this product. Should you find a question not readily available on the site, please don't hesitate to call or send us an email.

What is the Assurance Program offered with Assure and Assure Plus?

It is a digestive-wellness plan, known today as the Colic Assurance Program (CAP), that pairs the Assure System supplements with a colic-cost guarantee. When you keep an enrolled horse on its customized Assure regimen, it becomes eligible for reimbursement of colic-related veterinary expenses. The program is free of charge with the purchase of qualifying Arenus products.

How much colic reimbursement does the program cover?

Enrolled horses are eligible for up to $15,000 in lifetime reimbursement for colic-related veterinary expenses. Coverage applies to both medical and surgical colic episodes. It includes farm calls, in-hospital visits, diagnostics, trip charges, and other costs associated with treatment.

Who makes the Assure line of supplements?

The Assure System was originally developed by Equine Research Associates and is now produced and supported by Creative Science and Arenus Animal Health. The company describes its formulas as scientifically developed, veterinarian-approved, and clinically tested. You can reach customer service at 888-506-3039 or [email protected].

What is Assure With GST?

Assure With GST is a highly palatable, granulated product designed to be top-dressed directly on your horse's feed. It serves as the foundation digestive-health supplement in the Assure System. It works alongside Assure Plus for horses needing additional support.

What does Assure Plus do?

Assure Plus is a concentrated, pelleted psyllium boost with a soluble-fiber minimum of 71.4% per dose, formulated to clear and prevent sand accumulation and to firm up loose stool. It also includes probiotics and digestive enzymes. It is meant to work alongside the daily Assure System products.

What is Assure Guard Gold?

Assure Guard Gold is the all-in-one equine digestive aid that combines the benefits of Assure Guard and Assure Plus in a single daily pelleted formula. It supports the entire digestive tract from the stomach through the hindgut and contains no added sugars, making it suitable for metabolic horses. Many owners report seeing results in as little as one week.

What ingredients are in the Assure System?

The system uses psyllium seed husk, a blend of pre- and probiotics (Saccharomyces cerevisiae, Lactobacillus acidophilus, and Enterococcus faecium), and digestive enzymes including protease, alpha-amylase, and cellulase. It also includes brewer's dried yeast and a calcium-carbonate gastric buffer. Assure Guard Gold adds deglycyrrhizinated licorice root powder.

What digestive problems do these supplements address?

They are formulated for recurrent gastric or colonic ulcers, colic, loose stool and diarrhea, and sand accumulation. They also help horses with weight loss or poor body condition tied to digestive upset. The products support gut health from the stomach through the hindgut.

Are there clinical results behind the Assure System?

Yes. A field trial evaluating horses with a variety of serious GI conditions reported that 90% of recurrent colic cases, 100% of sand-accumulation cases, and 94% of weight-loss or poor-body-condition cases were resolved using the Assure Guard and Assure Plus combination. The company states the products are research proven and patented for use in managing colic episodes.

How do you enroll a horse in the program?

Enrollment is a three-step process: complete the online form for each horse and receive a qualification notice within 5 business days, place your initial order for the assigned Assure System products within 5 days of receiving your wellness plan, then begin the loading dose to activate coverage. Qualifying products must be purchased either 48 hours before submitting the form or within 5 days after acceptance. You can enroll as many horses as you like at no extra cost.

Is the horse's age a factor for enrollment?

Any horse that is weaned and at least 5 months of age is eligible for coverage. Unlike many competing programs, geriatric horses and horses with a prior colic history are accepted. Horses recovering from colic surgery may also enroll.

Where must the horse live to qualify?

The horse must reside within the USA or Canada to be eligible for enrollment. Once enrolled, coverage extends even when the horse travels internationally. Recently purchased horses require the last three years of veterinary medical records for claims.

What annual wellness requirements keep coverage active?

Each enrolled horse needs one annual physical exam, one dental exam with recommended treatments, and annual vaccinations, all by a licensed veterinarian. The horse must also follow a veterinarian-directed deworming program with at least two deworming administrations and one fecal egg count test per year. These requirements connect the supplement plan to a complete parasite and wellness routine.

Can I administer the dewormer myself?

Deworming may be owner-administered as long as you follow the deworming program guidelines set forth by your veterinarian. You must retain proof of purchase for the products used. Vaccines, however, must be administered by a licensed veterinarian.

How do claims and reimbursement work?

You pay your veterinarian directly, then Arenus reimburses you after you provide proof of payment. You must complete a Claim Initiation Form within 14 days of the colic episode and submit all required forms within 30 days of the completion of treatment. Reimbursement applies regardless of the outcome of the episode.

Does the program replace equine medical insurance?

No. The Colic Assurance Program is designed to complement your horse's medical insurance plan, not replace it. It provides reimbursement only for medical expenses associated with colic treatment.

What sizes and how do I order?

Assure Guard Gold is available in 16 lb (55 servings) and 25 lb (85 servings) sizes, and Assure Plus comes in 7.5 lb, 15 lb, and 25 lb tubs. The typical Assure Guard Gold loading period runs about six weeks at twice-daily feeding, then transitions to a maintenance dose. To order or enroll, contact the team at 888-506-3039 or [email protected].