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Less than $1.36/DAY
(32 day supply)


In Stock. Usually Ships within 24 hours.
Less than $1.11/DAY
(128 day supply)


In Stock. Usually Ships within 24 hours.
Shipping weight = 2.50 lbs.


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FREE Corta-Flx HA Quart when you purchase a Gallon!  $43.49 Value!  While supplies last.

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Sometimes, manufacturers require that products be advertised only at their suggested prices. When we choose to sell these items for less, we display the sale price only in the cart. To see the price, click Add to Cart.

Product Summary:

CORTA-FLX® HA Solution
CORTA-FLX HA Solution is a well-conceived liquid solution supplement designed for all horses that helps to enhance their endurance and agility and also maintains overall health. Fortified with Low Molecular Weight Hyaluronic Acid (LMW-HA™) CORTA-FLX HA is clinically proven and can be safely fed to your horse.
One unique thing about this liquid supplement is that the HA molecules are many times smaller than traditionally-created HA molecules used by other brands. This helps to get quick and visible results. Contains a combination of the isolated amino acids (glycine, proline, glutamic acid, glutamine, etc.) that make up both chondroitin and glucosamine, as well as 100 mg/oz sodium hyaluronate, 2% crude protein, 0.50% crude fat, 10% crude fiber, vitamins and minerals.


  • Clinically tested
  • Declared by the Horse Journal to be a highly-viable alternative to injectable HA
  • Quick results 
  • Made in the U.S.A.

Item Specifications:

Guaranteed Analysis:
Glycine (min)* ------------------------1.00%
Glutamic Acid (min)* ------------------0.30%
Aspartic Acid (min)* ------------------ 0.50%
Arginine (min) -------------------------0.21%
Lysine (min) -------------------------- 0.50%
Threonine (min) -----------------------0.08%
Proline (min)* ------------------------ 0.31%
Gelatin (min)* -------------------------1.00%
Hyaluronic Acid (HA)* --------------100 mg/oz
*Not recognized as an essential equine nutrient

Water, Sorbitol, Glycine, L-Proline, Condensed Extracted Glutamic Acid Fermentation Products, Pyridoxine Hydrochloride, Manganese Sulfate, Ascorbic Acid, Copper Sulfate, Sulfur, L-Arginine, L-Threonine, L-Tyrosine, Animal Protein Products, Gelatin, L-Lysine, DL-Methionine, L-Serine, L-Valine, L-Phenylalanine, L-Glutamine, L-Histidine, L-Isoleucine, L-Aspartic Acid, L-Alanine, Xanthan Gum (Homogenizing Agent), Sodium Benzoate (a preservative), Yucca Schidigera Extract (a natural flavoring agent), Natural and artificial flavors.

Directions for use:
For an average 1,100 lb (500 kg) horse, feed double amounts for the first 5 consecutive days (loading period). Thereafter for maintenance, feed 1 fl oz (30 ml) daily with the horse's regular feed or give orally. Feed others according to body weight, less for smaller horses and ponies, more for larger breeds.

1 qt (up to 32 days supply)
1 gallon (up to 128 days supply)

Do Not Feed To Cattle Or Other Ruminants
Keep Out Of Reach Of Children
Shake well before using
Store in a cool dry place
Protect from freezing
Do Not Use if seal is damaged or missing

For Product Label and MSDS Sheet, please click on Manufacturer’s Information to the right.

Downloadable Resources
MSDS SheetManufacturer Information
Product LabelManufacturer Information

Product Reviews by Customers

Rated 4.8 out of 5 by 5 reviewers.
Rated 5 out of 5 by Lame without it! I bought a mare I knew had lameness issues due to an injury with her ribs. Her previous owner had her on a cocktail of expensive joint supplements and still she was lame. I switched her over to Corta-Flx with HA and in 2 weeks she was 100% sound! Recently I ran out and within 1 week she was lame again. I'm sold. This stuff works! June 12, 2012
Rated 5 out of 5 by Corta Flx HA this product works better for my horse than any other joint product on the market October 2, 2011
Rated 4 out of 5 by corta-flx ha My horse had 2 bouts of a mild colic and when the vet came out he felt strongly that my old guy wasn't feeling well all over and that would make him "hold" himslef in (so to speak) and cause the colic. I started him on a pharmaceutical grade corta-flx ha and had amazing results. I then switched to corta-flx ha through and continue to enjoy my 28 year old qtr horse with light riding. It's a good product. March 10, 2011
Rated 5 out of 5 by This Stuff Is A Miracle! I have a 16 year old Arabian mare, former reining horse, who was in such pain I was sure she wouldn't make it to see 20. I had started her on the expensive injections, which helped. Then I found this product and, for a fraction of the cost of the injectables, Katie is now in top form as my most trusted trail mount, climbing mountains like a goat again. This product is nothing short of a miracle. I thank Corta-Flx for giving Katie the quality of life she deserves. February 16, 2011
Rated 5 out of 5 by Try it! My horse is 20 & picky. He is healthy but his joints were stiff 'til he got going & his previous life was not easy. I saw much improvement on the HA w/50mgs, so I bought the HA-100 and what a huge difference. No more creaking sounds and he loves the taste. His movement tells me everything about this product makes him feel good : ) We've been using the HA-100 for less than 6 months. It's a keeper & worth every cent. February 7, 2011
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1-5 of 5
Browse 2 questions and 11 answers
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Why did you choose this? Store
Helps my 26 year old mare move better and be more comfortable
Linda M on Nov 14, 2015
recommended by my vet for my horse with arthritic hock. Having good results
Kathryn J on Dec 17, 2014
My 18 yr. old hunter/jumper was starting to have some trouble holding up his hind legs for the farrier. My guess was some arthritis setting in. After a year of giving him a daily 1 oz. dose on his grain of this product, he can lift and hold all of his legs up with no discomfort for as long as the farrier needs. Tried lots of joint products and this one WORKS! Lots of people at my barn have switched over to the Corta-flex HA and are having great results.
Wendy S on Mar 28, 2015
Wonderful Stuff, Vet recommended! Mare was kicked in knee, has to injections and meds now. Added this stuff to help and boy does she feel better when she get this!! She actually started to jump & buck in the turnout. Highly recommend for any horse that is older or has a previous injury. Great Price! Plus Buy a Gallon, get a Quart FREE!! and 20% Off on my order today! Thank you State Line Tack! Will be back for more.
Kasey A on Jun 14, 2014
does a free 32 oz size come with the gallon size?
anna d on Nov 3, 2015
Best Answer: It has every time I've ordered it. Don't know if that offer is still available but it should state that it is if the offer is still on.
Reply · Report · Caral L on Nov 3, 2015
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