Best-Flex HA®

Lucy - 28/09/2025 02:05

Love this stuff, keeps my mare supple

ann - 27/09/2025 20:11

Best joint supplement I have used highly recommend I would not use anything else all my supplements are feedmark

Guest - 27/09/2025 19:07

Having been sceptical I tried this product for my 22yr old ex racer with arthritis not expecting anything the results are amazing he was really stiff and sore and on Bute but now in less than 3 months he’s only having this supplement and no Bute will continue on this product as it’s worth every penny to have my old lad back to himself

Clementine - 27/09/2025 07:04

Honestly the best supplement I’ve tried, I’ve got a 35 year old pony and this really makes a difference for him!

Guest - 26/09/2025 19:14

Used this for years for my veteran mare and it makes a huge difference. She is so much more comfortable when she has this and i would never be without it now.

Guest - 26/09/2025 17:07

Great product, arrived quickly and really seems to help keep my horse moving well

Guest - 26/09/2025 11:17

the product is benificial for older stiff horses and also
for younger ones just starting out in protecting their
joints

Natasha - 26/09/2025 08:02

Early days been on it 2 weeks now but she seems to be moving more free …. Always rate feedmark great products and fast delivery

Guest - 25/09/2025 21:26

My competition horse is on best flex HA and it’s made a huge difference to his competition longevity now he’s 15. I also give him steady up as he can be a little spooky and silly during the winter months when stables more and that too just keeps him focused on the job in hand.

Guest - 25/09/2025 19:17

This is an excellent product that I have now used for a couple of years ever since my horse had an inflamed suspensory. I would never be without it and have recommended it to a friend for her elderly dressage horse.

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Nutrition Information

Maintaining joint health is essential for all horses, particularly those in regular work, older horses, or those competing at high levels. Exercise and the natural aging process can put strain on the joints, making high-quality joint nutraceuticals a valuable addition to support your horse's mobility, flexibility, and overall comfort.

Repetitive concussive forces on the joints are a leading cause of joint wear, contributing to cartilage degradation and synovial membrane irritation. This can trigger an inflammatory response, which, if excessive, may overwhelm the body’s natural repair mechanisms, potentially leading to long-term joint issues.

Best-Flex HA is a scientifically formulated equine joint supplement designed to provide comprehensive joint support. It contains high levels of Glucosamine HCl, Chondroitin Sulphate, and Hyaluronic Acid (HA) - key nutrients that help maintain cartilage integrity and support synovial fluid. MSM is included for its role in supporting tissue elasticity and overall joint function. Additionally, Boswellia offers natural soothing properties, while Omega-3 polyunsaturated fatty acids support a normal inflammatory response. Vitamin C contributes antioxidant benefits, helping to maintain the neutralisation of free radicals and support joint tissues.

By delivering these essential nutrients in an optimal balance, Best-Flex HA® helps maintain joint structure, flexibility, and long-term mobility. Continued daily use throughout your horse’s active career ensures a steady supply of fundamental joint nutrients to support flexibility and performance. For veteran or retired horses, Best-Flex HA® helps soothe the joints and supports ease of movement. It is also safe to feed at increased levels and over extended periods of time for horses that may require additional support.

Micronutrient Analysis

Active Ingredients	Per 3 scoops:
Glucosamine HCl	18000 mg
Chondroitin sulphate	6500 mg
MSM (Methyl sulphonyl methane)	18000 mg
Hyaluronic acid (Sodium hyaluronate)	1100 mg
Vitamin C	11000 mg
Omega-3 fatty acids	11000 mg
Boswellia	12000 mg

Composition

Micronised linseed, Glucosamine HCl (vegetarian), Methyl sulphonyl methane (MSM), Boswellia, Linseed oil, Chondroitin sulphate (90%, low molecular weight), Sodium hyaluronate (HA).

Additives

Vitamins	Additive number	per kg
Ascorbic acid	3a300	122g

Analytical

Moisture	21.5%
Crude protein	14.0%
Crude oils & fats	14.8%
Crude fibre	5.6%
Crude ash	2.2%
Sodium	0.5%

*Based on publicised maintenance rates for active ingredients for a 500kg horse. Correct at time of release.

Feeding Guide

Body weight	Amount per day
Up to 250kg	1 Scoops
250kg - 400kg	2 Scoops
400kg - 600kg	3 Scoops
Over 600kg	4 Scoops

1 scoop (50ml) of Best-Flex HA® weighs approximately 35g.

Feed the recommended level, or as recommended by your veterinary surgeon.

The daily feeding rate can be adjusted based on your horse’s work load, age and mobility, to suit their long term daily requirements. Before and during a period of hard exercise, the daily levels can be increased to the next scoop level to provide extra joint support and may be continued on a long term basis for superior joint health support.

Best-Flex HA® is a complementary feeding stuff for equine animals. Feedmark uses nothing in the formulation of this product that contravenes FEI competition rules.

Learn more about competing within the rules by clicking here.

Does my horse require a joint supplement?

The #1 question we are asked as people find out that almost everyone on their yard is feeding joint supplements! For older horses, or horses in regular or hard work, the articular cartilage degrades, reducing joint movement and compromising mobility. Best-Flex HA® provides the highest levels of joint supporting ingredients available on the market to help maintain normal joint function. 

Is Best-Flex HA® the best joint supplement for veteran horses?

Yes, Best-Flex HA® is ideal for elderly horses, as it supports joint mobility and helps them maintain an active lifestyle.

Do I need to feed a loading rate of Best-Flex HA®? 

No, we believe that any changes to your horse’s diet should be made gradually for optimal digestive health. Therefore, slowly introduce Best-Flex HA® to your horse’s feed until you reach the recommended feeding rate.  

What is the difference between Best-Flex HA® and Extra- Flex HA®?

Best-Flex HA® is our highest specification joint supplement, and therefore contains higher levels of joint supporting ingredients when compared to Extra-Flex HA. Best-Flex HA® also contains Boswellia to provide anti-inflammatory support.

Can horses and ponies with laminitis or metabolic issues have Best-Flex HA®?

Yes such horses and ponies can have Best-Flex HA® as there is nothing in its formulation that will cause an issue for them. 

Can I feed Best-Flex HA® to my young horse or is it just for older horses?

Yes, this joint supplement contains ingredients that support joint, ligament, tendon and cartilage formation, which horses of all ages and workloads will benefit from.

Can Best-Flex HA® be fed to horses that are competing?

Feedmark uses nothing in the formulation of this product that contravenes FEI competition rules.

Does Best-Flex HA® support a normal inflammatory pathway?

Yes, Boswellia is included in Best-Flex HA® as the Boswellic acids support horse’s normal inflammatory pathways and maintain joint comfort.

Probably the world’s best horse joint supplement - read the reviews!