Joint Foundation Complex®
Joint Foundation Complex®
Joint Foundation Complex®
Joint Foundation Complex®
Joint Foundation Complex®
Joint Foundation Complex®

Vet Recommended 

Joint Foundation Complex®

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Loved by 340 horse owners

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Joint Foundation Complex® is designed to keep horses sound and moving well for years - a complete structural formula: 

- Builds Joint Tendon, Ligament & Bone
- Collagen Building Amino Acids
- Bone Minerals (Vitamin D3, K2, Silicon, Calcium),
- Oral Hylauronic Acid
- Biotin at 15 mg

All in one alfalfa-based daily feed. No glucosamine. Safe for the metabolic horse. 

60 Day Money-Back Guarantee

If you don't see desired results within 60 days we will refund your order

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Expected delivery in 3-5 business days

All of our products are shipped from the United States

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1000+ US Horses helped

Scientifically designed for healthy horse joints

Connective Tissue

✅ Collagen makes up 79% of joint cartilage - we feed it directly 

✅ Supports tendon & ligament elasticity 

✅ Aids repair of daily micro-damage from work

Connective Tissue

✅ Feeds the 79% of                     cartilage that's pure collagen 

✅ Resilient tendons &                   ligaments 
 
✅ Repairs daily micro-                 damage overnight

The Bone

✅ Supports bone density & strength 

✅ Alfalfa calcium absorbs 5x better than grass hay 

✅ Nutritional support for degenerative joint disease & Navicular

The Joint

✅ Replenishes synovial fluid 

✅ Lubricates & cushions joint cartilage 

✅ Oral hyaluronic acid produces higher serum levels than injections

The Bone

✅ Stronger, denser bone 

✅ 5x more bioavailable calcium than grass hay 

✅ Supports degenerative joint disease & Navicular

The Joint

✅ Replenishes synovial fluid 

✅ Lubricates joint cartilage 

✅ More effective than injections — without the needle

The Hoof

✅ 15mg biotin - peer-reviewed dose 

✅ Stronger hoof wall 

✅ Built from the ground up

The Hoof

✅ 15mg biotin - proven in peer-reviewed trials 

✅ Supports hoof wall strength & integrity 

✅ Visible improvement in hoof quality over time

Vet-reviewed formula

“Equin Joint Foundation supplements are a game-changer for senior horses. They’re formulated with science-backed ingredients I trust”

Dr. Deborah Wilson

Vet Consultant to Equin®

"

In a 59-day study of racehorses, the
horses given an oral Hyaluronic Acid
supplement - the kind you feed,
not inject - improved on every
measure of soundness. They also
needed the vet less often than the
horses that got nothing.

Matrix Biology Institute

Oral HA study, 26 racing Thoroughbreds

150-day controlled trial

"After 5 months, horses given
collagen-building nutrients
improved more in pain and joint
flexibility than horses given
glucosamine and chondroitin."

Murray State University

J. Vet. Pharmacol. Therap.

"

Horses given a structural joint
supplement moved their hocks
through a greater range of motion
- at both walk and trot - than
horses that received no supplement.

Oxford Academic

Gait kinematics study, mature riding
horses

Why Horse Owners Trust Equin®

We combine the latest equine research with expert insight to build one thing: a formula your horse's structural foundation can actually use. Every ingredient is dosed to matter - not to look good on a label.

Scientifically Backed Ingredients

Each ingredient in Equin Joint Foundation Complex is supported by peer-reviewed equine and clinical research

Reviewed by Equine Vets

Every formula has been reviewed by a veterinary expert before it goes near a bucket

Third-Party Tested

Rigorously tested for quality, potency, and consistency - every batch

Loved by US Horse owners

Equin® is trusted by horse owners across the country for real, visible results

Cutting-edge science, unmatched quality

Equin Joint

Standard Joint Supplement

Feeds the whole structure - bone, collagen & hoof

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❌

Supports tendons & ligaments, not just cartilage

✅

❌

Addresses synovial fluid and joint integrity

✅

✅

Replenishes joint fluid

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❌

Proven biotin dose - not token amounts

✅

❌

No glucosamine - no wasted money on poor bioavailability

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❌

60-day money back guarantee

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Fits into your existing feed routine

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Take your horse's joint health & comfort to the next level

Supports Joint Flexibility

Formulated with evidence-backed ingredients to help maintain comfortable, fluid movement - in work and at rest.

Helps with Stiffness & Everyday Discomfort

Supports ageing horses with stiffening joints and helps maintain synovial fluid, connective tissue, and daily comfort.

Supports an Active, Working Life

Designed to complement daily work and help your horse stay willing, mobile, and rideable for longer.

Feeds the Foundation - Not Just the Joint

Supports bone density, the collagen scaffold of tendon ligament, and hoof integrity - the structural foundation soundness actually stands on.

What to expect

89% of Joint Foundation subscribers saw positive results within 3 months of daily use.²

A more comfortable, active horse, with each scoop

No lameness

Easier movement

Comfortable joints

Better topline

Month 1

Joints move freer, less post-exercise stiffness, synovial fluid improving inside.

Month 2

Visibly easier movement, less heat and puffiness, hindquarters engaging more willingly.

Month 3

Noticeably more comfortable, flexible joints, stronger hooves, compounding improvement that holds.

2 - Results based on Foundation Complex subscriber internal feedback survey conducted in 2025 (n=200). 

Trusted by US horse owner

See what our customers are shouting about

Your horse's soundness, guaranteed.

Try Equin risk-free for 60 days. If you don't see a difference in how your horse moves, feels, and performs - we'll refund every penny. No questions asked.

Try Equin Risk-Free

Frequently asked questions

At what age can I start using Equin Foundation Complex for my horse?

Equin is suitable for horses from 2 years old. If you have any concerns, consult your veterinarian before introducing any new supplement.

What benefits does Equin Joint Foundation Complex offer?

It works across three structural pillars: bone (density, remodelling, repair), connective tissue (tendons, ligaments, collagen elasticity), and joint (synovial fluid, cartilage lubrication, range of motion). Most supplements only address the cartilage - Equin feeds the entire structure beneath it.

How long before I see results?

Most horse owners notice easier movement within the first 4-6 weeks. Full structural support compounds over 3 months of daily use.

When is the best time to feed Equin?

Yes. Daily training creates micro-damage in tendons and ligaments that needs to repair overnight. Equin supports that repair cycle, reduces connective tissue downtime, and maintains the synovial fluid and bone density that hard work depletes over time.

Is Equin suitable for horses in hard work?

Our joint supplement for dogs comes in a delicious pork flavour, which appeals to many dogs and can make supplement time feel like reward time. 

Are there any feeding restrictions?

Equin contains 0 banned substances and is suitable for competition horses. Always check with your governing body if competing at elite level.

What if I miss a day?

Just continue with the normal daily scoop. Don't double up - consistency over time is what drives results.

Is Equin safe for horses with existing health conditions?

If your horse is on any medication or has a diagnosed condition, consult your vet before adding any new supplement.

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© 2025 Equin.®

The information contained within this site is not intended as a substitute for professional veterinary advice. If your horse has, or you suspect your horse has any medical condition, you are urged to consult your veterinarian. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Medical conditions can only be diagnosed by a licensed veterinarian.