Menu
Search
Phone
Shopping cart 0
Welcome to Feedmark
  • Feedmark EU
Filters
Blog Options
Close
Menu
Dr. Stephanie Hyland BSc (Hons) Picture of Dr. Stephanie Hyland BSc (Hons) Ph.D. Equine Nutrition® Please call Stephanie Hyland MSc. RNutr. on 0800 585525
for qualified nutrition advice.
Feedmark Horse supplements
phone 0800 585525 or +44 1986 782368
Picture of Extra-Flex HA®
Extra-Flex HA®

High spec joint supplement with significant levels of proven ingredients

294 reviews. 4,9 / 5
Our customer Feefo rating
|
Add your review

Extra-Flex HA®

High spec joint supplement with significant levels of proven ingredients

294 reviews. 4,9 / 5
Our customer Feefo rating
|
Add your review
  • Reviews
  • Technical
  • Feeding Guide
Trusted Feefo Customer - 08/07/2026 13:54
Excellent product, my horse felt and looked much more comfortable.
Trusted Feefo Customer - 06/07/2026 23:21
Makes a great difference to stiff joints
Trusted Feefo Customer - 05/07/2026 19:34
Great product
Trusted Feefo Customer - 28/06/2026 20:38
An excellent product which I have used with veteran ponies for a number of years.
Effective in keeping them supple; good price and quick delivery.
Trusted Feefo Customer - 23/06/2026 21:12
I’ve been using this for years on different horses and it really seems to help
Trusted Feefo Customer - 13/06/2026 22:17
My cob can be a fussy eater but he seems to love extra flex HA. He seems more comfortable just after 2 weeks. Will certainly continue with this supplement.
Trusted Feefo Customer - 13/06/2026 19:25
Great product, fast delivery
Trusted Feefo Customer - 02/06/2026 08:07
Good but expensive
Trusted Feefo Customer - 31/05/2026 07:36
Great for my veteran ponies. Effective, a good price and quick delivery.
Trusted Feefo Customer - 30/05/2026 17:03
Too early to tell but very palatable
Trusted Feefo Customer - 26/05/2026 21:58
Only been using a few weeks but seems to be helping my horse move more freely
Trusted Feefo Customer - 22/05/2026 10:49
Excellent for my ponies knee joints been using extraflex ha for about 3 years +, well recommend it
Trusted Feefo Customer - 21/05/2026 10:35
Great product. So easy to order with fast delivery.
The rosehip content is great. My horse eats it no problem.
Trusted Feefo Customer - 19/05/2026 19:26
I use Extra Flex for my pony who has had surgery for bony cysts on his stifles. He has done really well since surgery and trotted up sound eight weeks post op.
Trusted Feefo Customer - 16/05/2026 19:20
Have used this product for many years after receiving advice from a equine physiotherapist.  My horse is now 20 and still charging around the field like a youngster.  Always a quick delivery with an easy to use website.
Trusted Feefo Customer - 15/05/2026 20:03
Fantastic product, has helped my pony with fetlock arthritis
Trusted Feefo Customer - 05/05/2026 19:18
Brilliant product been using for a while would recommend.
Trusted Feefo Customer - 26/04/2026 05:02
Great product my fussy horse WILL eat. Helps keep her moving into her old age. Fab service too.
Trusted Feefo Customer - 21/04/2026 19:42
It’s our second tube of this now, and my pony is definitely moving and feeling much better. She’s quite a fussy eater, but she licks the bowl clean every time — and it’s really affordable too.
Trusted Feefo Customer - 19/04/2026 07:49
There has been a marked difference in my 'old' boy's movement, at 22yrs he's still moving (& behaving!) like he did as a 4yo!
Trusted Feefo Customer - 09/04/2026 09:40
My horse felt so much better after introducing this supplement.
Trusted Feefo Customer - 08/04/2026 20:05
Great product
Trusted Feefo Customer - 07/04/2026 19:43
Excellent product been using for a while my throughbred mare seems to thilrive with this product .
Trusted Feefo Customer - 01/04/2026 19:55
Feedmark Extra Flex is supporting my pony after surgery for a subchondrial bony cyst. Radiographs taken 8 weeks post op show new bone is beginning to form at the bottom of the cyst below the screw insertion and also some at the top. The vet is very pleased with the results after such a short time and I put this down to having a helping hand from Extra Flex.
Trusted Feefo Customer - 24/03/2026 10:11
This product has rejuvenated my Welsh Cob .. he's always been a 'character' at the best of times but now he's even more of a 'character' than before! The last show we went to the judge questioned his age to check we were in the correct 'Veterans' class .. she didn't believe he was 22yo!
Trusted Feefo Customer - 16/03/2026 18:55
Excellent product
Trusted Feefo Customer - 05/03/2026 19:20
Great product, definitely benefitting my boy
Trusted Feefo Customer - 01/03/2026 19:49
Great product. I have a horse coming back from an injury, and using this alongside her rehab, it seems to be helping.
Trusted Feefo Customer - 21/02/2026 18:18
I've noticed a real difference in my Welsh D since using ExtraFlexHA, he's 'moving' better than ever, at our last show the judge wouldn't believe he was 22yo!
Trusted Feefo Customer - 19/02/2026 19:26
Brilliant product always use for my mare
Trusted Feefo Customer - 18/02/2026 18:56
I am using ExtraFlex to support my pony`s joints as he has slight arthritis. I also used this and Best Flex on my cob for numerous years after he had a bad stifle injury and it helped him enormously. Feedmark products are fantastic and their team are always very helpful if I need advice.
Trusted Feefo Customer - 18/02/2026 08:46
Made such a difference to my mare
Trusted Feefo Customer - 16/02/2026 18:37
I’ve really noticed a benefit with our pony
Trusted Feefo Customer - 10/02/2026 06:22
Great service and fast delivery!
Trusted Feefo Customer - 07/02/2026 17:41
Extra flex is fab for my horse that is starting with arthritis really feel a difference
Trusted Feefo Customer - 04/02/2026 19:15
My 20 year old has only been taking this for a week but he definitely likes the flavour x
Trusted Feefo Customer - 29/01/2026 13:17
Great supplement that definitely helps with joints and very palatable. Would highly recommend
Trusted Feefo Customer - 29/01/2026 12:02
Great stuff.
Trusted Feefo Customer - 24/01/2026 18:06
I’ve been using Feedmark products for over a year now. After trying so many shelf products and not seeing any difference, I decided to look into Feedmark. My little cob has very low grade arthritis, instead of going down the injections route, I researched into the products at Feedmark, he started on Feedmark extra flex and I have never turned back. Sound, pain free and no more sticky hocks! Amazing product! 100% recommend.
Trusted Feefo Customer - 23/01/2026 20:57
Excellent product used for my throughbred mare
Trusted Feefo Customer - 22/01/2026 06:57
Great quality product which is very palatable, no problems with my horse eating it. Easy to order and quick delivery.
Trusted Feefo Customer - 13/01/2026 12:17
A very palatable supplement which works well
Trusted Feefo Customer - 04/01/2026 18:19
Excellent company to deal with. My cob was on Best Flex for many years due to a stifle injury. Now my pony is on Extra Flex to help keep his joints in top condition. Really helpful advice too from their nutritionist.
Trusted Feefo Customer - 03/01/2026 11:05
Excellent product my horse loves it and is much more supple now. Highly recommended
Trusted Feefo Customer - 02/01/2026 20:54
I have been using this for a while and my horse has definitely been getting the benefit from it. I would highly recommend it
Trusted Feefo Customer - 29/12/2025 20:14
Fantastic product, seems to really help
Trusted Feefo Customer - 28/12/2025 18:05
I have used this product for a few years now with all my horses, works well and very palatable
Trusted Feefo Customer - 26/12/2025 18:27
Excellent product
Trusted Feefo Customer - 26/12/2025 04:27
Great company, my fussy eater loves ExtraFlex HA
Trusted Feefo Customer - 14/12/2025 20:03
Great product, I’m sure that my horse is feeling the benefits of being on this. Always super quick delivery and very palatable.
Trusted Feefo Customer - 08/12/2025 11:03
This supplement is amazing, my 19 year old has so much energy and feels wonderful to ride. My only wish is that I wish I’d used it a year ago
Trusted Feefo Customer - 07/12/2025 11:12
Great product always have this in tack room
Trusted Feefo Customer - 06/12/2025 17:04
Yard staple supplement
Trusted Feefo Customer - 03/12/2025 20:46
My two retired ex racehorses Jezz (28) and Red (21) have been having Extraflex HA recently to help with their arthritis in this cold and wet weather. So far we have had not needed to reach for the Danelon like in previous winters. They happily eat it in their evening feeds and it keeps their aches and pains away.
Trusted Feefo Customer - 02/12/2025 18:23
Brilliant product
Trusted Feefo Customer - 28/11/2025 21:25
Excellent product; used for many years with veteran ponies.
Quick delivery; good price.
Would highly recommend .
Trusted Feefo Customer - 26/11/2025 07:30
Excellent product my 19 year old horse is much more flexible and loves the taste. Can highly recommend
Trusted Feefo Customer - 25/11/2025 18:52
Excellent service. I ordered it late and almost ran out, but it arrived just in time.
Trusted Feefo Customer - 25/11/2025 18:44
Fast delivery, my horse finds it very palatable
Trusted Feefo Customer - 24/11/2025 12:02
I have been feeding my horses ExtraFlex for many years. My current riding horse has been benefitting from it since I bought her 7 years ago and at age 14, is still sound, strong and very athletic! I have it on subscription, so I don't have to remember to re-order each month. Thanks Feedmark for making a happy horse and a happy owner!
Trusted Feefo Customer - 21/11/2025 20:39
I always buy my horse supplements from Feedmark as they actually do work. I have now put my 9 year old Fell pony on Extra Flex, not that there is anything wrong, but to protect his joints in future years. My elderly cob was on Best Flex after a bad stifle injury and I was really pleased with the results.
Trusted Feefo Customer - 20/11/2025 09:15
Seems to be working!
Horse has only been on this for a week, so it's probably a bit early to tell; however, my farrier says he's the best he's been for a long while in terms of stiffness.
Trusted Feefo Customer - 15/11/2025 19:19
Early days but she seems more comfortable
Trusted Feefo Customer - 13/11/2025 19:56
Just started my young pony on this. As a preventative.  She's only been on it a couple of weeks. Will definitely be ordering again.
Trusted Feefo Customer - 11/11/2025 05:34
Great product, quick delivery
Trusted Feefo Customer - 01/11/2025 11:28
I've definitely found an improvement in my boy, not quite so stiff. Also he finds it palatable.
Trusted Feefo Customer - 26/10/2025 11:04
I have been feeding my horses ExtraFlex to support their joint health for many years. It has the optimal level of active ingredients, is palatable and seems to do the job!
Trusted Feefo Customer - 20/10/2025 18:05
Great product! Currently using alongside rehabbing my dressage horse. It’s been a great supplement to use as she comes back into work and will continue to use as maintenance once back in full work.
Trusted Feefo Customer - 17/10/2025 17:44
Quality products, good price, quick delivery. Effective.
Trusted Feefo Customer - 12/10/2025 20:26
Would recommend best flex brilliant product.
Trusted Feefo Customer - 07/10/2025 08:50
Very quick delivery, packaged well and the horses are eating it in their feeds. Too early to tell if it’s helping their joints yet.
Trusted Feefo Customer - 07/10/2025 08:47
I’ve had my 20year old horse on this for a few years. He’s had a few injuries and I believe that being on this supplement has helped his recover and maintained his joint health.
Trusted Feefo Customer - 04/10/2025 22:27
Great for all my horses big and small helps with movement especially in the colder weather
Trusted Feefo Customer - 29/09/2025 07:15
My equine physio recommended this to me and I started my horse on it a month ago and just ordered my second tub. My horse is moving well and seems more comfortable. Started using it as he is 15 and thought some joint help would be good for him.
Trusted Feefo Customer - 29/09/2025 06:02
Having used ExtraFlex for the last 3 weeks my elderly horse loves it and is really showing signs of moving much better. Very impressed and horse loves it
Trusted Feefo Customer - 27/09/2025 21:25
I went onto the online chat and got some great advise. I was recommended the best flex but as my horse is a fussy boy she suggested trying the extraflex. So far so good. He loves it.
Trusted Feefo Customer - 25/09/2025 19:14
Have been using bestflex for a while.Very easy to use and my horse seems to like it. .
Trusted Feefo Customer - 20/09/2025 22:05
Easy to order and quick delivery. Great product
Trusted Feefo Customer - 13/09/2025 19:11
I would highly recommend this product, I have just started using it and I think it has started to help my horse. Also the service from feedmark is very good.
Trusted Feefo Customer - 05/09/2025 19:29
Palatable, prompt service. Hoping my horse feels better as a result. She certainly seems less stuff.
hilary - 02/09/2025 10:16
seems to be working
Trusted Feefo Customer - 29/08/2025 07:41
An excellent product. Have used for a number of years with veteran ponies. Effective, good price and quick delivery.
Trusted Feefo Customer - 26/08/2025 07:32
Great delivery. It was quick to arrive as I normal leave it until the last minute to order again.
Trusted Feefo Customer - 23/08/2025 20:01
Great product. Arthritic horse moving so much better. Been on it for a year.
Trusted Feefo Customer - 13/08/2025 11:41
It was recommended by several friends who had experienced good results.
Trusted Feefo Customer - 09/08/2025 21:15
Great supplement
Trusted Feefo Customer - 02/08/2025 19:18
I have used this supplement for years for my horses. It’s very high quality and you can really feel a difference when a horse goes onto it.
hilary - 30/07/2025 20:35
only just started using it on my 28 year old new forest and starting to see a difference
Trusted Feefo Customer - 26/07/2025 22:22
Delivery time is brilliant… I always leave it too close to the end of the tub to order. My competition horse is currently out of work lame, but will stay on this product through her rehab! Great product.
Trusted Feefo Customer - 26/07/2025 07:31
Really good made such a difference to my stiff mare. Would recommend it.
Trusted Feefo Customer - 25/07/2025 21:18
I have been using Extra Flex for many years, ever since a McTimmony practitioner told me my horse was showing signs of stiffness in his hock.  He was 13 at the time.  He is now 19 and shows no signs of stiffness.  It has done wonders for him and he'll stay on it until his end.  Feedmark as a company, are always helpful and respond quickly to any queries. Delivery is quick and reliable and I've never had any issues.
Trusted Feefo Customer - 17/07/2025 20:33
Made such a  difference  to my 21 yo
Welsh Cob .. moving (&behaving) like a 5yo!
Trusted Feefo Customer - 16/07/2025 19:12
Trying this product for first time haven't been using this particular one very long.
Trusted Feefo Customer - 13/07/2025 12:48
My boy is 21 now he has been  on extra flex  a couple of years and doing  really well. Excellent service always 👏
Trusted Feefo Customer - 11/07/2025 19:12
Great product
Trusted Feefo Customer - 02/07/2025 06:01
Great product, my horse is really feeling the benefit from this.
Trusted Feefo Customer - 01/07/2025 19:24
Another excellent product, which I have frequently used over the many, many years of horse owner. I have many compliments on her coat condition, she's shiny and black and this is just one of Feedmarks products that I use.
Trusted Feefo Customer - 17/06/2025 20:48
My competition horse is coming mid teens and just needed that extra bit of help in her work load. I have noticed a difference in her way of going. Great product!!
Trusted Feefo Customer - 14/06/2025 20:16
Excellent product and service
Trusted Feefo Customer - 01/06/2025 19:30
Have used Extra Flex for a few years now after it was recommended by a McTimmony practitioner.  My horse had a slight stiffening of his right hock.  He has been on it ever since.  The same McTimmony practitioner says his hocks are now fine and there are no signs of any stiffness.  Plus, it makes his boring chaff breakfast taste nice and he never turns his nose up at it.
Trusted Feefo Customer - 16/05/2025 18:33
Great for keeping my veteran ponies supple and moving freely.
Have used for a number of years with several ponies, always good results.
Trusted Feefo Customer - 07/05/2025 08:15
Would recommend
Trusted Feefo Customer - 06/05/2025 07:49
My 18 y.o. Ex racer benefits tremendously from this supplement and still has the moves!
Trusted Feefo Customer - 15/04/2025 11:56
Excellent joint supplement that keeps my 25 year old veteran leaping and bucking around the field like a 3 year old. He even managed to double-barrel me in the chin and chest at new year, no small feat for a horse who retired from competition with hock spavin aged 7!! 😅
Trusted Feefo Customer - 15/04/2025 05:50
Easy to order and received prompt.
Been using for my 21 yr mare for a few years now and it really helps to keep her flexible with no signs of stiffness
Trusted Feefo Customer - 12/04/2025 13:30
Great product
Trusted Feefo Customer - 10/04/2025 19:46
Super quick delivery and a great product!
Trusted Feefo Customer - 10/04/2025 19:34
My old pony has been on ExtraFlex for a few months now. He is moving more freely now . Very palatable as he is a fussy eater.
Trusted Feefo Customer - 05/04/2025 09:51
Great product
I have been using for years
Keeps horses on the move
Trusted Feefo Customer - 02/04/2025 13:18
As always arrived promptly and a brilliant product
Trusted Feefo Customer - 28/03/2025 20:44
I have been using ExtraFlex for a month now and I see a difference in my old pony's. movement, less stiff.
Trusted Feefo Customer - 24/03/2025 19:38
Excellent customer service, fast delivery and fantastic products. The ExtraFlex HA Is so great for my boy who has arthritis in both his hocks
Trusted Feefo Customer - 21/03/2025 08:13
Great product - has helped my veteran boy
Trusted Feefo Customer - 19/03/2025 18:20
Helps my horse with his joints.
Trusted Feefo Customer - 10/03/2025 18:31
HAD MY HORSE ON IT FOR OVER 12 MONTHS HE SEAMS TO MOVING BETTER.
Trusted Feefo Customer - 27/02/2025 21:07
Excellent customer service.  Too early to say if product is doing anything, it is palatable!
Trusted Feefo Customer - 26/02/2025 18:53
My old pony loves it. He seems better for it less stiff in his movements.
Trusted Feefo Customer - 23/02/2025 12:58
Excellent product which has helped my horse’s arthritis. Very knowledgeable, helpful staff at feedmark.
Trusted Feefo Customer - 13/02/2025 18:34
My older ponies are benefiting from ExtraFlex. Only been feeding for a few weeks but I can see a difference.
Trusted Feefo Customer - 09/02/2025 18:03
Excellent product
Trusted Feefo Customer - 06/02/2025 21:03
This product is fab you actually can feel a difference both my horse have a spring in their step instead of stiffness
Trusted Feefo Customer - 02/02/2025 16:40
Really helps with joints.
Trusted Feefo Customer - 23/01/2025 13:23
Through  a friend  recommended
Trusted Feefo Customer - 15/01/2025 07:56
Excellent product, very pallitable, and keeps my horses joints flexible and showing no stiffness
Trusted Feefo Customer - 13/01/2025 19:37
Quality supplement keeps my mare nice and supple. Excellent service from the feedmark team as always
Trusted Feefo Customer - 06/01/2025 18:20
Great product
Trusted Feefo Customer - 01/01/2025 21:08
Excellent service as always.  Definitely a product I will be using agsin and again. To soon to see results but it goes down nicely with no complaints.
Trusted Feefo Customer - 31/12/2024 17:27
Great info available from customer service which made choosing the right product so much easier.
Trusted Feefo Customer - 23/12/2024 21:35
high potency of ingredients which is crucial. Also very palatable, my boy loves it. I can see its really starting to help with his arthritis
Trusted Feefo Customer - 17/12/2024 14:39
Great so far!
Trusted Feefo Customer - 16/12/2024 21:51
Keeps my old ***** cob enjoying life and hacks.  most comprehensive joint supplement I've found and he's bowl is always clean!
Trusted Feefo Customer - 11/12/2024 20:49
Love seeing the rosehip seeds in the product.
Trusted Feefo Customer - 27/11/2024 18:14
Our horses do well on extra flex
Trusted Feefo Customer - 26/11/2024 20:25
Excellent product. My retired cob is on this to keep him active and pain free.
Trusted Feefo Customer - 26/11/2024 16:39
I've used ExtraFlex for years and it's made the world of difference to my cob. I wouldn't use anything else now.
Trusted Feefo Customer - 26/10/2024 19:34
Amazing product!
Trusted Feefo Customer - 26/10/2024 19:33
Amazing product! Horse loves it and looks fantastic!
Trusted Feefo Customer - 22/10/2024 17:47
Great product, fast delivery.
Trusted Feefo Customer - 17/10/2024 19:21
Have used this for a number of years to keep my ponies supple. Palatable, easy to use and effective.
Trusted Feefo Customer - 10/10/2024 21:20
Helps my 17yo ex racer
Trusted Feefo Customer - 27/09/2024 10:12
I have been using ExtraFlex HA for several years now for my 24 year old who was diagnosed with hock spavins nearly 17 years ago. As his hocks had fused, I've used ExtraFlex for the past 15 years more for joint support than anything else and he is thriving, galloping and bucking about his field like a youngster full of life. Can't get better than that!
Trusted Feefo Customer - 23/09/2024 19:20
My 19 year old mare is a bit stiff in the morning. This is a lovely natural product and it seems to be helping her.
Trusted Feefo Customer - 18/09/2024 19:31
Have used for a number of years. Keeps my veteran ponies supple. Very palatable and easy to use. Good value too.
Trusted Feefo Customer - 13/09/2024 20:05
I've used this products for over 10 years.  It made a massive difference to the quality of life for an elderly horse I owned.  There was a noticable improvement in movement after he started it.  My current horse is younger and is having this for maintenance and has no joint issues.
Trusted Feefo Customer - 10/09/2024 15:57
My 16.2 28 year old has been on ExtraFlex HA now for three weeks  and has I felt a huge improvement in his flexibility when I last rode him.
So much so I have just ordered his second tub.
Thankyou
Trusted Feefo Customer - 02/09/2024 15:17
This has supported my older boy to continue to be comfortable in his work
Trusted Feefo Customer - 30/08/2024 17:51
Great products and great service!
Trusted Feefo Customer - 29/08/2024 20:49
Delivered quickly and my fussy horse is eating it perfectly
Trusted Feefo Customer - 29/08/2024 14:38
It has helped with my horses clicking g joints
Trusted Feefo Customer - 19/08/2024 14:47
Good product has helped my 28 year old
Trusted Feefo Customer - 18/08/2024 12:31
Great product
Trusted Feefo Customer - 15/08/2024 22:41
Quick delivery, appears very palatable and has improved stiffness in cob’s legs
Trusted Feefo Customer - 15/08/2024 19:40
This supplement has maintained my boys suppleness and movement for the last 10years. He’s now 19yrs and still kicks up his heals.
Trusted Feefo Customer - 07/08/2024 19:29
Buy this product for my older horses to keep them moving well
Wouldn’t buy anything else
Trusted Feefo Customer - 05/08/2024 17:25
Great stuff
Trusted Feefo Customer - 02/08/2024 14:06
I have been using this product for a few years now for my aging mare, and she is still happy to hack out and throw the odd buck with excitement 😄, I am very satisfied
Trusted Feefo Customer - 25/07/2024 17:50
Great product to keep older horses comfortable
Always order and use this product
Great delivery service
Trusted Feefo Customer - 20/07/2024 10:26
Fabulous products and service
Trusted Feefo Customer - 15/07/2024 21:26
I started using extraflex about a year ago for my 17yo who had some arthritis in his hocks. It does seemed to have helped him to keep moving well. He likes the taste too which helps!
Trusted Feefo Customer - 15/07/2024 21:11
Have used for a number of years for my veteran ponies. Helps to keep them moving freely.
Trusted Feefo Customer - 13/07/2024 12:37
Great product that really helps my 17hh friesian as a big horse he needs thebit extra
Trusted Feefo Customer - 08/07/2024 20:37
Great stuff
Trusted Feefo Customer - 24/06/2024 21:20
Great joint supplement at a reasonable price!
Trusted Feefo Customer - 22/06/2024 09:53
Great product feed it to my boy who has arthritis in his stifles
Trusted Feefo Customer - 21/06/2024 08:35
Used it a few years ago with another pony it
Kept her going ,  so am now using again with our other pony
Trusted Feefo Customer - 19/06/2024 19:57
Great product great price
Trusted Feefo Customer - 19/06/2024 19:18
I have used Extra flex HA for a long time now and fully recommend it to my friends. I received positive results with extra stride and flexibility with my horses after just a short time of using it.
Trusted Feefo Customer - 18/06/2024 21:21
I have used extra flex for my 17 year old TB for 3 years and would not be without it! She has arthritis and the difference on it is huge!
Trusted Feefo Customer - 18/06/2024 20:47
Great service and help my boy in his older years
Trusted Feefo Customer - 17/06/2024 21:15
Have used this product for a number of years with my veteran ponies. Helps to keep them supple and moving.
Trusted Feefo Customer - 03/04/2024 15:40
Used for veteran ponies for a number of years. Helps to prevent stiffness
Trusted Feefo Customer - 29/03/2024 11:18
Keeps my pony sound and happy
Trusted Feefo Customer - 13/03/2024 18:43
Have been using with veteran ponies for a number of years. Keeps them flexible and mobile
Trusted Feefo Customer - 07/02/2024 13:08
I have a very healthy shiny horse
Trusted Feefo Customer - 19/01/2024 20:00
It has helped joint movement
Trusted Feefo Customer - 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.
Trusted Feefo Customer - 22/12/2023 08:25
My horse has been having this for many years and I don’t want to stop
Trusted Feefo Customer - 13/12/2023 16:48
I used this  supplement for my arthritic pony and it helped his joints.
Trusted Feefo Customer - 19/10/2023 21:20
My pony now has arthritis, and this product keeps him confortable.
Trusted Feefo Customer - 18/10/2023 22:23
Extra flex has kept my horse's legs flexible and sound.
Trusted Feefo Customer - 27/09/2023 17:04
Continues to support the mobility of my veteran ponies
Trusted Feefo Customer - 26/02/2023 20:20
Certainly helping my older horses
Very palatable even for the fussy eaters
Trusted Feefo Customer - 09/02/2023 09:30
Would highly recommend this supplement
Trusted Feefo Customer - 09/02/2023 09:25
Definitely helps my lovely old girl!
Trusted Feefo Customer - 09/02/2023 09:22
Great product & good results!
Trusted Feefo Customer - 06/02/2023 11:23
Only been feeding a few weeks so cannot give top marks yet!!
Trusted Feefo Customer - 25/01/2023 19:48
Have used for a number of years with veteran ponies to good effect. Helps with potential stiffness.
Trusted Feefo Customer - 14/12/2022 23:23
Really helps my veteran to keep moving
Trusted Feefo Customer - 12/12/2022 19:50
5 star product ,easy palletable
Trusted Feefo Customer - 04/12/2022 20:14
Best supplement I have every used
Trusted Feefo Customer - 30/11/2022 21:22
I believe the product keeps my elderly horse comfortable and he has been on it for a few years
Trusted Feefo Customer - 13/11/2022 20:05
Helps my boy with his joints as suffers with stiffness in his older age
Trusted Feefo Customer - 11/11/2022 16:08
Great product my horse has it all the time and he seems much happier.
Trusted Feefo Customer - 10/11/2022 10:06
Used for a number of years with veteran ponies to good effect, helping with stiffness.
Trusted Feefo Customer - 23/10/2022 21:57
Palatable for a very fussy horse , product appears to be maintaining her mobility
Trusted Feefo Customer - 20/10/2022 21:06
Used this product now for over 3 years in my veteran.
Trusted Feefo Customer - 19/10/2022 21:04
Really good supplement it has helped my boy
Trusted Feefo Customer - 29/09/2022 08:12
Used in the past with good results, just started to use again with new veteran pony. Find it helps with general stiffness and well-being
Trusted Feefo Customer - 23/09/2022 12:54
Seems to help with veteran’s joints
Trusted Feefo Customer - 10/07/2022 22:45
Seems to be helping with joint stiffness
Trusted Feefo Customer - 19/05/2022 16:56
Fast delivery & super product. Wouldn’t shop anywhere else…
Trusted Feefo Customer - 17/05/2022 00:22
Extraflex HA with rosehips keeps my 25 year old mare happy and supple. She is still able to enjoy her life with some light schooling, pole work and hacking. Although she is "Loss of use" and has a bit of arthritis in her hindquarters, Autumn still acts as though she is half her age and I believe it is the Extraflex that helps her to do this.
Trusted Feefo Customer - 20/04/2022 21:26
Good product use daily for both my competition horsed
Trusted Feefo Customer - 06/04/2022 21:03
Not been using long enough to fully rate. But palatable to very fussy eater
Trusted Feefo Customer - 29/03/2022 12:25
Horses are very happy with it
Trusted Feefo Customer - 23/03/2022 20:11
Horse eating supplement with no problem . Too early to rate effectiveness
Trusted Feefo Customer - 23/03/2022 19:18
Excellent product, excellent delivery service
Trusted Feefo Customer - 02/03/2022 19:29
Great product. Makes a real difference to my horses way of going.
Trusted Feefo Customer - 14/02/2022 11:09
I have a young and a retired horse, both benefiting from this product. Really pleased.
Trusted Feefo Customer - 06/02/2022 21:05
My horse is moving more freely and comfortably
Trusted Feefo Customer - 19/01/2022 19:11
Great so far so good fingers crossed
Trusted Feefo Customer - 30/12/2021 17:30
Great supplement that’s very palatable
Trusted Feefo Customer - 10/11/2021 19:27
Products are really good, have seen a difference with the joint supplement both my horses seem to be moving much more free and more comfortable
Trusted Feefo Customer - 06/10/2021 20:40
Good quality supplements with excellent service
Trusted Feefo Customer - 25/08/2021 20:33
I like this supplement and my horse really enjoys the taste. I don’t think it is quite as effective as Bestflex.
Trusted Feefo Customer - 23/08/2021 14:24
All horses like it seems to help
Trusted Feefo Customer - 19/08/2021 12:36
I was a bit worried about trying this item but I am amazed at the results on my two a 23 year  old Welsh Section A and a ***** cob with underlying problems.
Trusted Feefo Customer - 18/08/2021 20:11
I am trying this supplement for the first time as an alternative to Bestflex. I like it; the horses love the taste but I will return to Bestflex as the Boswelia content gives an element of pain relief.
Trusted Feefo Customer - 01/06/2021 19:53
my horse is 26 years old the supplement keeps him going
Trusted Feefo Customer - 19/05/2021 20:11
Palatable my horses looks forward to meal times
Trusted Feefo Customer - 17/05/2021 13:22
A great palatable effective product
Trusted Feefo Customer - 05/05/2021 20:15
2 fussy horses eat the supplement with no issues and both seem to be feeling good.
Trusted Feefo Customer - 30/04/2021 08:46
Hooves are stronger on Hardy Hoof, joints are more flexible on Extraflex.
Trusted Feefo Customer - 29/04/2021 08:17
I always use Feedmark products, they are fantastic
Trusted Feefo Customer - 09/04/2021 13:03
Have used this product for some time. Ideal for my veteran pony; helps his joints and very palatable
Trusted Feefo Customer - 25/03/2021 18:08
Very palatable and "does what it says on the packaging"
Trusted Feefo Customer - 14/03/2021 15:43
Great product for a range of horses
Trusted Feefo Customer - 04/03/2021 14:13
Have used for a number of years; excellent support for veteran pony
Trusted Feefo Customer - 25/02/2021 20:22
Quality product that really helps my equine friend
Trusted Feefo Customer - 12/01/2021 17:43
A great joint supplement I use on an old horse and 2 competition horses. Highly recommend. Good value for money.
Trusted Feefo Customer - 10/01/2021 20:22
It helps my 20 year old immensely..
Trusted Feefo Customer - 06/01/2021 19:17
I have found this very useful in maintaining mobility in both an older horse and one with arthritic issues. I have never had a problem getting the horses to eat it when added to their feed.
Trusted Feefo Customer - 28/12/2020 19:38
I have used this product for some time and find it very useful on my 19 year old gelding.
Trusted Feefo Customer - 21/12/2020 19:45
Helps to keep my veteran supple.
Trusted Feefo Customer - 17/12/2020 23:26
I have been feeding ExtraFlex with Rosehips for some time now to my 22yo TB mare. She has hock stiffness and I feel this helps with continued use. Can thoroughly recommend Feedmark supplements
Trusted Feefo Customer - 17/12/2020 19:37
Love this supplement. Great product and works really well.
Trusted Feefo Customer - 19/11/2020 09:25
early days so hoping i see the the benefit soon.
Trusted Feefo Customer - 15/11/2020 19:53
Used now for a couple of month and no stiffness.
Trusted Feefo Customer - 09/11/2020 08:32
Extra flex helps to keep my veteran pony supple.
Trusted Feefo Customer - 29/07/2020 21:53
Early days yet - but hoping for good results
Trusted Feefo Customer - 23/07/2020 08:18
I use this for my elderly horses and it really has started to help, this will be my regular order now
Trusted Feefo Customer - 22/07/2020 10:11
Good Product seems to work and is palatable to a fussy eater
Trusted Feefo Customer - 16/07/2020 09:15
having not given my horse any supplements for a few months while he was on tick over in  lighter work, I am pleased to say I have noticed a difference in his way of going in just a couple of weeks
Trusted Feefo Customer - 09/07/2020 14:01
Palatable product, non dusty, effective.
Trusted Feefo Customer - 06/07/2020 15:21
Horse looks much more free when she walks and feels like she is using her front end more now.
Trusted Feefo Customer - 10/06/2020 20:25
Fantastic visible difference in movement for my two older ponies. I feel the changes when I ride.
Trusted Feefo Customer - 20/05/2020 20:58
Seems to make a  difference with 3 of our horses
Anne - 05/02/2020 17:55
je mets bon car j'ai commencé à le donner il n'y a que 15 jours 18 tout au plus , ce qui peut paraître un peu tôt pour affirmer . A repréciser dans 2 semaines .
Trusted Feefo Customer - 02/02/2020 15:53
Really feel the difference from this supp on my pony’s joints. She can feel quite stiff. ExtraFlex is keeping her moving and enjoying life
Trusted Feefo Customer - 02/01/2020 19:01
Trusted Feefo Customer - 02/01/2020 11:31
Seems to have helped my veteran horse with the stiffness in her joints.
Trusted Feefo Customer - 10/12/2019 19:45
perfect for a very compromised horse- arthritis & diffused keratoma
Trusted Feefo Customer - 29/11/2019 10:36
My horse has no problem eating his feeds with the supplement.
Trusted Feefo Customer - 27/11/2019 13:57
Products suit my horse and I could see the benefits within 30 days
Trusted Feefo Customer - 24/11/2019 17:03
seems to be helping-early days
Trusted Feefo Customer - 30/10/2019 10:41
Makes a real difference to my horse who suffers from sacroiliac joint issues & my older boy with stiff joints. Both seem more comfortable & move more freely.
Trusted Feefo Customer - 30/10/2019 10:24
Very good product, helps the horse  massively
Trusted Feefo Customer - 24/10/2019 19:00
Great stuff,works wonders for my mums mare who suffers with her legs
Trusted Feefo Customer - 23/10/2019 18:30
I feel that my 17 year old mare working at PSG level benefits from this supplement and it helps keep her joints mobile so that she can continue to enjoy her work
Trusted Feefo Customer - 09/10/2019 15:55
Horse finds it tasty.  Early days (7) yet to know if it is making any difference to his arthritic hocks, need him on it for a month or so and then judge it.
Trusted Feefo Customer - 22/09/2019 23:41
I couldn’t be without Extraflex HA.  It keeps my 22 year old Shire mare in ridden work
Trusted Feefo Customer - 22/09/2019 09:00
Trusted Feefo Customer - 18/09/2019 13:26
Trusted Feefo Customer - 21/08/2019 16:15
Contains maximum concentrations of ingredients
Trusted Feefo Customer - 21/08/2019 15:32
Such amazing results using this supplement!
Trusted Feefo Customer - 31/07/2019 20:30
This is a tried and tested product which I have used for several years and seems to help my horse's joints and keeps him active.
Trusted Feefo Customer - 25/07/2019 10:43
It works, what more can I say
Trusted Feefo Customer - 24/07/2019 21:25
I have been using ExtraFlex HA with Rosehips for many years for my cob, who was prone to lameness, with good results.
Trusted Feefo Customer - 24/07/2019 21:14
This keeps my 22 year old mare flexible and happy in her work. Highly recommend/
Trusted Feefo Customer - 17/07/2019 11:25
Excellent product with clearly indicated ingredients and ratios
Trusted Feefo Customer - 23/05/2019 12:00
I have been using this to good effect for some time now.
Trusted Feefo Customer - 22/05/2019 15:41
Great supplement for my horse for supporting his joints when in work
Trusted Feefo Customer - 16/05/2019 13:15
Love this product! have used it from some time and it seems to be the only thing that makes a difference! Keeping my older horse able to go on long hacks with no problems.
Trusted Feefo Customer - 08/05/2019 19:12
I have been using this product on two horses it is amazing
Trusted Feefo Customer - 08/05/2019 17:21
Top class product and perfect for my horse.
Trusted Feefo Customer - 10/04/2019 15:30
Trusted Feefo Customer - 10/04/2019 15:27
Really excellent product which I will always use for my horses
Trusted Feefo Customer - 18/01/2019 12:24
Great product for horses in competition .
Trusted Feefo Customer - 30/11/2018 12:50
This product has made a difference to my 18 year old Friesian in terms of her freedom of movement now that I am feeding the correct dosage ! !
Trusted Feefo Customer - 28/11/2018 16:14
I feed my 13 year old cob mare the maintenance ration to help keep her initial stiffness from getting worse. She does eat it even though she is a rather fussy feeder.
Trusted Feefo Customer - 16/09/2018 22:06
Excellent product horses love it
Trusted Feefo Customer - 26/07/2018 11:26
Helps with hooves and coat
Trusted Feefo Customer - 20/07/2018 11:59
Been using it for along period of time. Seems to aid horses movement and agility
Trusted Feefo Customer - 16/07/2018 11:45
Merlin has been on this for approx 1year following his stifle lameness.
He was diagnosed with OCD of the stifles with secondary sacroiliac issues. Extraflex has certainly helped and I can no longer hear him creaking!
He will be on it for life as maintenance, thank you Feedmark for a wonderful supplement that definitely supports overall joint health.
Trusted Feefo Customer - 09/04/2018 14:09
Fantastic, why else would I have been purchasing for years!
Trusted Feefo Customer - 08/01/2018 11:21
Brilliant have used for used
Trusted Feefo Customer - 14/10/2017 16:44
Seems to help my cobs creaky joints
Trusted Feefo Customer - 11/10/2017 16:07
It works just as it should, old pony much more comfortable
Trusted Feefo Customer - 10/10/2017 07:28
Both my horses are given this supplement. 1 of them is 28 years old  and still loves to go out for a ride and a good canter. Extraflex HA with Rosehips has kept his joints healthy and supple. It's so easy to use and he can be a fussy eater, but eats it in his good with no problems.
Trusted Feefo Customer - 09/10/2017 14:27
Lovely to see my horse moving more freely
Trusted Feefo Customer - 09/10/2017 13:08
This is great  stuff and although tried other procducts I keep returning to this.
Trusted Feefo Customer - 09/10/2017 12:27
My mare has arthritis and both my vet and physio have looked at the ingredients and recommend the product
Trusted Feefo Customer - 09/10/2017 12:03
Excellent product to help joints in veterans
Trusted Feefo Customer - 09/10/2017 11:36
Used this product for the last two years and it seems to help my old boy who is now jumping better than ever

Nutrition Information

Glucosamine hydrochloride (HCl) is a well documented joint health ingredient used by the body to help maintain articular cartilage and joint function. This is 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

Per 3 scoops (90g)

Rosehips 

30,000 mg

Glucosamine HCl 

12,500 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, 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 competition rules.

Powered by nopCommerce
Copyright © 2026 Feedmark Ltd.. All rights reserved.

This website is no longer in use

Don't worry, you can still order Feedmark products outside the UK via our main website.

Please visit Feedmark.com and use the country selector to choose your location and place your order.

Go to feedmark.com