Best-Flex HA®

Guest - 15/09/2025 19:58

I’ve been using Best Flex for years now, it really does work and keeps my horse comfortable with his ringbone and sidebone issues. I’ve recommended it to family members and friends for their horses and they’ve had great results too. Highly recommend.

Terena - 15/09/2025 08:52

My TB ex-racehorse has had some tendon issues and has been on glucosamine for some time with good results. As with all slightly older horses, he is 18yrs, his joints are showing some age related tiredness, I decided to look for something that may give him more benefits than the supplement I was using. This was the one that had the best reviews but also contained the ingredients glucosamine and MSM which I know has been working well for him. He has been on this for a fortnight now and it seems to agree with him, not making him silly as TB can be, and he seems to be moving freely. So far looking good.

Gail - 14/09/2025 19:20

Excellent for my 25 year old. Really helping him. I have used feedmarl products for a very long time on my mare and gelding who are no longer with us but we're 30 and 31 when I lost them.

Helen - 14/09/2025 12:50

This product makes a huge difference to both of my horses. They are more flexible and it keeps them happy, comfortable & willing to work.

Guest - 13/09/2025 19:29

Changed from another well known brand about 2 months ago. Horse has arthritis and this product has made a real difference. Will certainly purchase again.

Sandra - 13/09/2025 15:31

Best flex helps keep my old horse mobile and my young horse supple

Jane - 13/09/2025 10:48

Easy website to use and great service.
Best-flexHA makes a huge difference to my pony's comfort. I ran out and soon noticed the difference

Guest - 12/09/2025 21:12

Great customer service and delivery. Recommend by a friend been using for 4 years. Great offers

Guest - 12/09/2025 20:56

Thank you for a super productive. I feed it to my 19 yr old and 5 yr old and it works on both of them as maintenance and management.

Guest - 12/09/2025 09:32

Absolutely amazing, my mare is so much more flexible in her hip joint that she had been struggling with

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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!