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29 total reviews

RJX for Horses™

RJX for Horses™

Joint supplement for horses

Regular price $84.95
Regular price Sale price $84.95
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made in USA GMP certified no byproducts gluten free

Flavor: Apple

Made for Horses

For ages: One year and up

Now in a Convenient Concentrated Powder Form!

Triple-Strength "Big 3" for Healthy Joint Function in Horses: RJX™ combines MSM, glucosamine and chondroitin for horses, —key nutrients renowned for their effectiveness in supporting equine joint health and their role in synthesizing natural hyaluronic acid. This potent blend is especially beneficial for performance horses facing challenges like arthritis, lameness, reduced joint flexibility, or pastern issues.

Pure, Powerful, and Gentle on Horse Joints: RJX™ offers a robust formula crafted without steroidal fillers or harsh chemicals, RJX™ is designed to nurture optimal, healthy joints and inflammatory response, naturally and without adverse effects.


A pre-measured scoop is included in each container of RJX. 1 scoop is equal to 0.88 Tablespoons (approx. 2.5 tsp). Measure according to your horse's weight. Up to 900LB: 1/2 scoop (approx. 1.5 tsp) , 900 LB-1200 LB: 1 scoop (approx. 2.5 tsp); 1200 LB+: 1 1/2 scoop (approx. 4 tsp)

Supplement Facts

  • (Amount per 1 scoop)
  • Manganese (Amino Acid Chelate) 10mg*
  • Glucosamine Sulfate 5000mg*
  • Chondroitin Sulfate 1000mg*
  • MSM 5000mg*

Other Ingredients

Apple cider vinegar, natural apple flavor.

What to expect

Many horse owners report improvements in mobility and joint function within a few days. However, for best results and to ensure the full benefit, we recommend a full 8-week regimen.

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  • arthritis natural supplement

    Joint health and cartilage support

    Glucosamine and chondroitin are essential for the repair and formation of cartilage, supporting both synovial fluid and overall joint flexibility.†

  • glucosamine chondroitin horses

    Improved comfort

    MSM is recognized for its anti-inflammatory properties, which can significantly improve comfort levels.

  • horse joint supplement

    Bone strength

    Manganese is vital for bone formation and maintaining healthy bone density, essential for the mobility of performance horses.

joint supplements for horses

Discover the best

Fast acting. Fast Absorption. Super concentrated.

Fast absorption for quick results improving performance and healthy joint function. Experience the joy of riding with your horse at its peak health and vitality.

horse joint supplement

Naturally therapeutic

Pure. Powerful. Gentle.

Crafted without the use of steroidal fillers or harsh chemicals, it's designed to nurture great joint health, naturally address the inflammatory responses, and without harsh or adverse side effects.†

joint supplement for horses with arthritis

Easy and Palatable

Effortless Integration, Exceptional Results

Designed with equine preferences in mind. Natural apple flavor makes it a treat your horse looks forward to every day.

vet recommended horse joint supplement

Veterinarian Approved

Endorsed by experts. Loved by Champions.

Endorsed by experts and loved by champions, RJX™ is crafted to meet the highest standards of equine health and nutrition. Its natural formulation makes it a preferred choice among horse owners seeking the best support for their horse’s joints.

Frequently Asked Questions

Ask us anything about RJX for Horses™

natural joint supplement for horses

When should my horse take RJX?

Ideal for horses showing signs of reduced mobility or those aging, particularly as potential support for arthritis. As with any important dietary change, consult with your veterinarian for tailored advice.

What are signs of arthritis in horses?

Watch for reduced range of motion, stiffness prior to activity, joint swelling or warmth, and behavioral changes indicating discomfort.

Why choose RJX over other equine joint supplements?

RJX™ combines glucosamine sulfate, chondroitin sulfate which is more gentle than glucosamine HCI and chondroitin HCI. With the added benefit of MSM, this powerful and unique formulation isdesigned to support all aspects of horse joint health including the synthesis of natural hyaluronic acid.

Will my horse like the flavor of RJX?

With a natural apple flavor, RJX™ is designed to be palatable and eagerly accepted by horses, making daily supplementation easy.

Can RJX be used with anti-inflammatory drugs?

RJX™ can complement anti-inflammatory treatments, potentially allowing for reduced reliance on medications. Consult your veterinarian for tailored advice.

How does RJX™ contribute to the long-term health of my horse’s joints?

RJX™ is formulated not only to alleviate symptoms associated with joint issues but also to support the long-term health of your horse's joints. The active ingredients work synergistically to maintain and improve the structure of cartilage and synovial fluid. This support helps to prevent further deterioration of the joints, which is crucial for the ongoing agility and comfort of performance horses. Regular use of RJX™ can help ensure that your horse remains active and healthy, capable of achieving its full potential in both daily activities and competitive events.

The Nusentia® Guarantee

We want your experience to be as worry free as possible, so we offer 60-days to try our products. If for any reason RJX for Horses™ doesn't work out for your pet, simply reach out for a full refund.

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Customer Reviews

Based on 29 reviews
Penny Beakley

We recieved it when promised

Sue Schaefer
Great stuff but takes forever to get it.

Today is April. 13. I ordered RJX on Mar. 30 and it's still not here. The past several times I've ordered, it has taken much longer than expected to get it. Ordering from Amazon never worked out well so I order direct from Nusentia with better results. We have 2 horses (19yo) on RJX and it has made a noticeable difference in how well they move. We'll keep them on it, as long as we can get it.

pam barnes

A friend uses this on her horse and loves it dates it works well can I give this to my 210lb mastiff

Kayla Fika
Product is great but don’t order over the borders

I’ve been using this joint supplement on my horses for years and love it. I live in Canada and there’s no dealers up here so I order straight from Nusentia. Only this time I had all the problems getting it!! I ended up having to drive to the airport (1 hour each way) to sign something at customs so they’d release it to FedEx :/ what a huge nuisance! I will likely have to find a new Canadian joint supplement to replace this one to avoid this future inconvenience.

Thank you for shopping with us. We hope to have more convenient to Canada soon.

Susan Bonas

I see a little difference in movement of my older mare after using this supplement. I found it doesn’t have to be refrigerated unless it’s stored in a warm place. That was hood to know.