All Life Stages • All Performance Levels • All Forage Diets

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Mind, Body & Sole Grass

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Trusted Leaders In Equine Nutrition For Over 20 years

Top Selling Forage Specific Vitamin & Mineral Supplements

Because Your Horse Deserves The Best - Starting With Balanced Nutrition

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Scientifically developed by equine nutrition experts to address your horse’s dietary requirements.
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Formulated by equine nutrition professionals with 20+ years of specialized experience.
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Only human-grade ingredients—because we know the highest quality ingredients make a difference.

Best Sellers – Our Customer’s Favorites

Equine Challenge Pro Amino Amino Acid Horse Supplement
Amino Acid Supplement
Contains 10 Essential + 6 NE Amino Acids
Pro Amino supports topline, muscle mass improvement, post injury healing, pregnant & lactating mares, growing foals, yearlings & young horses.  Pro Amino contains 10 essential + 6 non essential amino acids.
starting at $61.95
All-in-One Grass Horse Ration Balancer
Mind, Body & Sole Grass Supplement
The Complete All In One Horse Supplement
This supplement supports Mind, Body, & Sole.  Contains the same ingredients found in our Vitamin & Mineral Grass Supplements (including 7 strain  probiotic package with the addition of Hoof Propel & Joint Support ingredients. 
starting at 147.95
Probiotic Blast Digestive Supplement
Digestive Supplement
Probiotic/Prebiotic Digestive Supplement
Probiotic Blast promotes a thriving gastrointestinal tract by providing a 7 strain viable probiotic package, PLUS the addition of 2 Prebiotics. Prebiotics  support the hindgut well being by promoting “friendly” bacteria.
starting at $49.95
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Why Equine Challenge Horse Supplements?

Support Your Horse from the Inside Out

At Equine Challenge Supplements, we offer a complete line of doctor-formulated equine nutrition designed to bring your horse into metabolic balance and support every system in the body. We use only the highest quality, bioavailable ingredients—because what goes into your horse truly makes a difference.

Our supplements are cost-effective, easy to feed, and trusted by horse owners who want their partners to thrive, not just survive.

The Equine Challenge Difference

Our concentrated ration balancer supplements are formulated for horses of all types and life stages. Each formula includes the most commonly deficient trace minerals—Copper, Zinc, and Selenium—plus a 7-strain viable probiotic package to support gut health and nutrient absorption.

Because most forages are already high in iron, we never add iron to our supplements. Instead, we focus on providing the right balance of vitamins and minerals using only premium, bioavailable ingredients for superior absorption and results.

Whether you mix it with grain, hay pellets, or feed it straight from the bucket, Equine Challenge Supplements make it easy to give your horse the balanced nutrition they deserve—naturally.

Don’t see what you’re looking for? Contact us today at kathy@equinechallengesupplements.com regarding our custom products to help meet your horse’s nutritional needs.  Questions? Give Us A Call Today @ (800) 806-6150 Horse Vitamin Supplements | Equine Nutrition | Equine Health
All In One/Multi Purpose
Topline - Muscle Mass
Calming
Digestion
Insect
Herbal
Hoof
Joint/Tendon/ Ligament
Respiratory
Sand/Psyllium
Vitamins & Minerals
Custom Blends

Frequently Asked Questions

Yes, our supplements are formulated for horses of all ages, breeds and activity levels.  All Life Stages – All Performance Levels – All Forage Diets.  

All of our products are made right here in the United States.

Many horses experience noticeable improvements within a short period.  Depending on current health conditions and severity, all horses respond differently. 

Shipping is always free to all 48 contiguous states + Hawaii & Alaska

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Equine Challenge Supplements Frequently Asked Questions

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What Customers Say About Us

Hello Kathy, I just want to say thank you for recommending On Demand for my Quarter Horse with arthritis, Stella. It’s made a HUGE difference. She’s moving much better, happily cantering, and transitioning between gaits without drama… and has happy eyes again! Still a brat, but that’s what we love about her. Your products make a difference! More gratitude,
Erin
Our MFT Shasta suffered from EMS and resulting laminitis at a young age. We had to soak his hay and boy was that a chore. We met Dr. Mackie at a barefoot trim school and he explained to us Shasta’s situation. We started him on Equine Challenge Grass and he improved and was sound for many years. At 19 we added Hoof Propel and now, at 20, he also needs Laminae 911. With front boots and these supplements, Shasta is comfortable and still here to give us our wonderful morning whinny.
Testimonials Shasta
Harold & Diana Miller
Since I have been feeding the Laminae 911 to four mares, after 30 days, all are showing amazing improvement. I am so glad to have found this supplement.
Diane Dempsey
As always, a happy Equine Challenge customer… my mare Pangea is already featured on your page from last year’s transformation, this year I offer up comparison pictures of O-Ren, a new training project I have in… the first picture was taken at her old home at the very end of March, and the second picture is today, not quite 4 weeks later. Can’t wait to see what she looks like at the end of NEXT month!
Andrea G
Andrea G
Have been struggling with what/how to supplement my alfalfa fed mustang mare who is showing signs of mineral deficiency. Equine Challenge made it SUPER easy to find the right supplement for her and even better, my as of late, picky mare LOVES it! Easy to order, quick delivery. LOVE IT. Abigail Illenberger
Abigail Illenberger
The first picture was Rita when we got her in October of 2012. She is 24, previously foundered, and has cushings. After talking with Mackie we put her on grass hay and Equine Challenge Grass along with the Probiotic Plus. The second picture is Rita today. What a difference 5 months and Equine Challenge Supplements make!!!!
Debbie F.
Debbie F.
I have been using Equine Challenge Vitamins and Minerals for Grass for several years. I also use the Probiotic Blast. My four horses are healthy and happy, no colic or other digestive issues. Kathy was awesome in sending me information when one of my horses needed some extra care. Love the fast, free shipping. Great customer service!
Julie Irwin
Just wanted to let you know that my Sunshine has been on your Laminae 911 for 3 weeks now and we are weaning her off of it cuz she is no longer sor e in front! I have told lots of my Facebook friends who have horses that have this problem and they have gotten this and they also have told me they love it and how fast it works. I love it cuz it is all natural! Thanks so much for a wonderful product that actually works!
Equine Challenge Laminae 911
Elaine
I want to thank Kathy for all the help I think I had her on the phone for over an hour . My mare has been on the joint and tendon for a while and its work great. Kathy also had me put her on the vitamin and minerals alfalfa so we will see how that works just started it. Thank you
Mary & Kitty
I have to share the results I’ve seen in my big gelding with the use of the Equine Challenge Well B-ing. Freaking amazing is an understatement, Slick is not the same horse. He’s only been on it about 7 days, I do have to use 2 scoops am and pm but figure once he really gets completely loaded on it I may be able to drop it down. I am so excited for Slick, he now is thinking. Thanks so much.
Testimonials
Sandy
I bought “Probiotic Blast” to help my horse through some Runny Burn issues. She’s been using it about a week and I am seeing improvement. Thank you for teaching me about the issue and providing a great product to treat it! Awesome customer service and quick delivery.
Jessica Rudd
Best muscle supplement I have ever used. Noticed improvement in 7 to 10 days! I now have 3 friends trying it!!! My horse feels AMAZING. I have never seen this dramatic results so quickly! We’ve been on a it about 21 days and he’s shaved off 2 min/mile in his workout and isnt ready to quit! He is 13 yrs old and has recently had trouble developing and/or maintaining topline. No MORE! He is getting his topline back and developing beautiful muscle at the same time. I could not be happier!
Equine Challenge Pro Amino Toni Martin Barrel Horses
Toni Martin Barrel HorsesLongview, TX
Laminae 911 is working great for my horse. I have tried many other herbal supplements that did not worked. With the Laminae 911 he is moving great.
Lorene Roberto
Hello Kathy, I hope you are doing well. I have been a very satisfied Equine Challenge Supplements customer for years. So much that most of my client’s and training horses are on it as well. This is a picture of my Belgian Warmblood, Nextravagant, at his 2 year old Keuring. he grew up from conception on Equine Challenge. Thank you for providing such an outstanding product!
Rebekah Larimer Testimonial
Rebekah LarimerRebekah Laremer Training
Kathy, Nic had his fall check up last week. His vet of 10 years was so impressed with his heath and fitness! She asked what I was giving him. I give Equine Challenge much credit for his health!
Neide, CO
We just lost our 35 year old mare who we owned for 29 years. We want to thank the many years we’ve fed her Equine Challenge Grass to keep her healthy until the end. Thank you!
Sid Replogle
I have only used the pro amino formula on my personal horses and the Grass on clients horses. I am completely blown away at how great the pro amino formula works. It alone has helped my ulcer prone filly. Now I am not having to give ulcer meds as often. Only when we travel. Their coats looked good before but look WOW now. And their feet are Growing so fast. I can't imagine what the hoof formula would do.
StephanieAlabama
I’ve been using Pro Amino on a few of my racehorses and I’m very happy with the results so far. It’s a more complete product compared to others on the market. My horses are eating it well (it smells great), and I’m seeing noticeable improvement in their toplines, coats, muscle tone, and overall recovery. I plan to start using it across my entire barn. Highly recommend! Sarah W
Sarah WRacehorse Owner
When you’re two-year-old colt is not afraid of your tractor at all, and daddy drives through the gate and Squeaker runs out the gate and goes to the lawn and starts grazing over the septic tank!! lol!! Daddy calls you while you’re away grocery shopping in complete panic- AFTER he closed the gate up at the road… I walk him through- grab his vitamin bucket, kiss 3x, and he’ll follow you to the pasture for his Equine Challenge vitamins!! … sure enough, while I was on the phone he did just that!
Leslie N.
Leslie N.Washington

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Bottomless Bucket Auto-Ship

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Never run out of your Equine Challenge Supplements again!

We offer our customers the Bottomless Bucket Auto Ship delivery option which takes the hassle out of remembering to order product before your current supply runs out.

If you would like us to automatically ship product to your doorstep, all you need to do is fill out the form below and we will handle the rest.

**If at any time you would like to change the shipment schedule please send an email to kathy@equinechallengesupplements.com at least one week prior to scheduled shipment date and your shipping schedule will be adjusted. We must have this in writing & we will email you cancellation confirmation.

If you would like your orders automatically shipped to you, please provide us with your name, email, phone number and items you would like put on auto ship and we will contact you shortly for payment info. *All fields are required.

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