ExtraFlex HA®

Guest - 02/10/2026 22:20

Great service every time, fast delivery and just the best products on the market. I wouldn’t use anything else.

Guest - 02/10/2026 09:45

Great supplement that supports my horses

Guest - 30/09/2026 20:11

Good service and prompt delivery. Palatable for my horse who seems to be doing really well on this product.

Guest - 28/09/2026 09:19

Excellent product at a fair price. Used for two veteran ponies for a number of years to help keep them supple.

Guest - 27/09/2026 19:21

Quick delivery. Palatable and my horse is feeling strong and happy on this product.

Guest - 25/09/2026 00:06

I’ve been feeding Extraflex to my horses for years. Every few years I check other products’ ingredients but come back to ExtraFlex.
I’m confident it slows onset of arthritis type conditions and improves comfort as horses get a bit older.

Louise - 17/09/2026 21:16

Best supplement on the market that actually works. My 25yr fjord mate is less stiff better behaved for the farrier and all round happier since being in extra flex ha and zero Bute. After years of trying a range of products from feed shops I’ve finally found one that actually works

Guest - 15/09/2026 19:16

I have used Extra Flex for the last 7 years due to a stiff hock at 13. My horse is now 20 but still takes a 3.1/2 hour hack in his stride, with no obvious discomfort or stiffness, which I put down to the continued feeding of Extra Flex.

Emma - 07/09/2026 21:23

Very impressed definitely helped our 15 year old

Charlotte - 05/09/2026 18:34

Lots of great ingredients to support joints and very palatable. Definitely notice a positive difference

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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 in this horse joint supplement, as these are a powerful natural antioxidant for optimum joint health to help with tired horse 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, supporting the horse's formation of cartilage and connective tissue.

Please note: The number of days each size tub will last depends on the weight of your horse and your chosen feeding rate. The 'Days Supply' indicated in a guideline only.

Micronutrient Analysis	Per 3 scoops (90g)
Rosehips	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

Composition

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

Analytical

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	4 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.

Does Extra-Flex HA still contain MSM, Glucosamine, Chondroitin, and HA, similarly to Best-Flex HA?

Yes, Glucosamine and MSM are still included in Extra-Flex HA® to support your horse's joints and mobility, however, for a higher specification try Best-Flex HA®.

How many scoops of Extra-Flex HA do I feed my horse?

We base our feeding rate off your horse's body weight and Extra-Flex HA® is fed per day depending on workload. Check out our feeding guide section to see how many scoops your horse needs for optimal support.

What vitamins are included in Extra-Flex HA?

Vitamin A, C and K naturally occur in the Rosehips included, which help support your horse’s cartilage and connective tissue.

High spec horse joint supplement with significant levels of proven ingredients.