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ExtraFlex HA®

High specification joint supplement with Rosehips

336 reviews. 4.9 / 5
Jo - 21/02/2024 13:55
This is a fab joint supplement for my aging IDX he's 18 and still in full work. We noticed he had hock stiffness when first setting off but since we put him on this he's been great no stiffness at all. He does have a high glucosamine addition along side maybe doesn't need both but am loathed to change anything
Guest - 07/02/2024 13:51
Gives my gelding a new lease of life. Not so stiff when he comes out of his stable
Sara - 07/02/2024 13:08
I have a very healthy shiny horse
Guest - 19/01/2024 20:00
It has helped joint movement
Julie - 08/01/2024 11:20
Extra-FlexHA has really helped my Connemara mare who suffered from clicky pelvis, been on it for three eeeks and clicking stopped a lot more comfortable in herself and her gait’s actually improved moving more fluidly and enthusiastic about going out. Hopefully eventing this year!
Guest - 02/01/2024 17:42
Have used this product since December 2022 on our RDA driving pony who works very hard and is now 20. He's doing really well on it.
Guest - 22/12/2023 08:25
My horse has been having this for many years and I don’t want to stop
Guest - 13/12/2023 16:48
I used this  supplement for my arthritic pony and it helped his joints.
Guest - 19/10/2023 21:20
My pony now has arthritis, and this product keeps him confortable.
Guest - 18/10/2023 22:23
Extra flex has kept my horse's legs flexible and sound.

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Nutrition Information

Glucosamine hydrochloride (HCl) and Chondroitin sulphate are well documented joint health ingredients used by the body to help maintain articular cartilage and joint function. These are complemented by Hyaluronic acid, which works within the joint capsule to support the joint and aid shock absorption, and Methyl sulphonyl methane (MSM), which supplies sulphur that is required to provide strength to articular cartilage and has antioxidant properties which helps to mop up free radicals. In addition to these, a generous helping of Rosehips is included, a powerful natural antioxidant for optimum joint health to help with tired joints, caused by age or wear and tear. These Rosehips provide naturally occurring Vitamin A, C and K to help potentiate the effects of the nutraceuticals, optimising the formation of cartilage and connective tissue. 


Micronutrient Analysis

Active Ingredients 

Per 3 scoops (90g)


30,000 mg

Glucosamine HCl 

12,500 mg

Chondroitin sulphate 

1,000 mg

Hyaluronic acid (HA) as Sodium hyaluronate 

400 mg

Methyl sulphonyl methane (MSM) 

10,000 mg



Rosehips, Micronised linseed, Glucosamine HCl (vegetarian), Methyl sulphonyl methane (MSM), Grass meal, Chondroitin sulphate (90%, low molecular weight), Sodium hyaluronate (HA).



Moisture 16.0%
Crude protein 16.3%
Crude oils & fats 8.8%
Crude fibre 20.2%
Crude ash 3.7%
Acid insoluble ash 4.8%
Sodium 0.4%


Feeding Guide


Weight of Horse/Pony              

Amount per day

Optimum Rate

(increased support including hard work)

Amount per day

Maintenance Rate

(general support)

Up to 250kg 1 ½ scoops ¾ scoop
250kg - 400kg 2 scoops 1 scoop
400kg - 600kg 3 scoops 1 ½ scoops
Over 600kg ½ scoops 2 ¼ scoops

1 level (50ml) scoop of ExtraFlex HA weighs approximately 30g.

ExtraFlex HA is safe to feed long term, and results may take some weeks to become apparent.

Feed supplements should be fed according to body weight. Introduce to the horse's diet gradually, splitting between feeds (when applicable).

ExtraFlex 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