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Product Description

  • Proven to significantly improve common lower respiratory conditions like Recurrent Airway Obstruction (RAO) and Inflammatory Airway Disease (IAD).
  • Aleira horse breathing supplements contain the very same vegetarian, algae-derived DHA utilized in human infant formulas making it the only equine respiratory supplement available with this exclusive, concentrated DHA source.
  • Aleira contains an exclusive trio of ground mushrooms long trusted to provide powerful anti-oxidant support, address respiratory inflammation and support the pleural tissues.
  • Aleira is currently patent-pending, ensuring its formula exclusivity as an equine respiratory health supplement and that it has been extensively researched and proven to provide the benefits intended.
  • In addition to the equine respiratory health benefits Aleira provides as a supplement, it has been shown to clinically improve immune mediated conditions like allergies, hives and dermatitis.
  • Aleira pairs well with conventional treatments and provides a non-medical alternative horse breathing supplement in cases where traditional medications are not indicated or well tolerated. 

Aleira®’s patent-pending formula supports optimal equine respiratory health and provides a research backed solution for common lower respiratory ailments in horses like Recurrent Airway Obstruction (RAO) and Inflammatory Airway Disease (IAD).  Omega-3 Fatty Acids have been extensively researched with DHA proving to be the most effective in addressing immune, respiratory and reproductive issues.  Aleira’s exclusive, vegetarian, algae-derived DHA formula is coupled with a proprietary Mushroom Matrix®, Methylsulfonylmethane (MSM) and vitamin C to create the most powerful equine respiratory health supplement available. 

Research performed at Purdue University proved Aleira horse breathing supplements effective in improving common lower airway conditions like RAO and IAD [1].  Our patent-pending, Aleira formulation was the very product utilized in this study.  Clinically, it has also been used to address immune mediated conditions like allergies, hives and dermatitis along with performance limiting conditions like Exercise-Induced Pulmonary Hemorrhage (EIPH) or bleeders with great success.  This daily horse breathing supplement pairs well with conventional treatments and provides and a non-medical alternative for horses where traditional medications are not indicated or well tolerated. 


[1]  Nogradi N, Couetil LL, Messick J, Stochelski MA, Burgess JA. Evaluation of an Omega-3 Fatty Acid Containing Feed Supplement in the Management of Horses with Chronic Lower Airway Inflammatory Diseases.  J Vet Intern Med 2015; 29: 299-306.


Frequently Asked Questions




1 Scoop Dosing

(Light Horses/1100lb/500kg)

2 Scoop Dosing

(Draft Horses/2000lb/900kg)

½ Scoop Dosing


Aleira® 2.8lb

45 servings

22 servings

90 servings

Aleira® 5.6lb

90 servings

45 servings

180 servings



At one scoop per day dosing.




Aleira® 2.8lb



Aleira® 5.6lb



Product Videos

3-Day Event rider Jennie Brannigan talks Aleira 02:52

3-Day Event rider Jennie Brannigan speaks about her success with her horse Ping and the respiratory supplement Aleira.

  • 3-Day Event ri...
    3-Day Event rider Jennie Brannigan speaks about her success wi...

Additional Information


Safety for use in pregnant animals or animals intended for breeding has not been proven. If condition worsens or does not improve, stop product administration and consult your veterinarian. An examination from a veterinarian is recommended prior to using the product.

For equine use only. Keep out of reach of children. In case of accidental overdose, contact a health professional immediately. This product should not be given to animals intended for human consumption.


Orally administer one 30g scoop (included) per 1100lb of body weight daily.

If palatability issues arise, begin feeding small amounts of Aleira for the first few days gradually working up to a full dose. Adding a few ounces of water, vegetable oil or mint extract may enhance palatability.


Active Ingredients per 30g Scoop:
Methylslfonylmethane (MSM)..........................................5,000mg
Mushroom blend..............................................................2,000mg
Docosahexaenoic acid (DHA)..........................................1,500mg
Ascorbic acid (vitamin C).................................................1,000mg

Inactive Ingredients:
Alfalfa meal, artificial flavors and sweeteners (ground peppermint and peppermint extract), mixed tocopherols and proprionic acid.

Product Reviews

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Showing reviews 1-10 of 19 | Next

  1. won't eat

    Posted by Unknown on Apr 23rd 2018

    my horse won't eat it.

  2. heaves therapy

    Posted by Unknown on Jan 16th 2018

    I purchased this expensive product for my 11 yr old welsh cob with newly diagnosed summer pasture associated RAO on vet recommendation . The product is extremely stinky and not palatable and may require slow addition with addition of sweeteners to entice your horse. I can see some horses will probably never eat this because of its noxious odor. I have seen mild to moderate improvement in horses clinical condition with reduced resp rate and nasal flaring and increased performance tolerance, although we have incorporated other measures such as wet hay and eliminate pine shavings dust and his particular disease flare occurs from June- oct. the real test will be this period coming up this summer. I will add to my review after that period

  3. Hopeful so far

    Posted by Unknown on Jan 9th 2018

    7 year old horse was recently diagnosed with IAD and a specialist who has done clinical trials on Aleria highly recommended this. So far my horse is doing much better (combined with steamed hay and soaked alfalfa cubes to avoid mold), but when it gets to be spring it will be the real test. It does smell and taste bad, but mixing with soaked alfalfa cubes has made it palatable. Hiding in grain didn't work. Wish it wasn't so expensive.

  4. Great Product

    Posted by jeffrey buysse on Jul 21st 2017

    Aleira has worked very well on my 19 yr old gelding with heaves. His bouts with breathing difficulties are much less common than before aleira.

  5. I think Aleira is helping my 10 year old quarter hourse mare with Reactive Airway Disease

    Posted by Unknown on Jun 21st 2017

    My mare had an episode of respiratory distress and was treated for pneumonia two years ago. Then, she developed a chronic cough that worsened with cold weather. We had her on Ventipulmin, but her cough returned if we discontinued the Ventipulmin. Upon her vet's recommendation, we tapered her off Ventipulmin and switched her to Aleira. So far, it seems to be keeping her cough at bay. We will see how she does this winter when the weather gets colder as cold air is a trigger for her cough. But I am really encouraged by her response to this product so far. She didn't want to eat Aleira at first but we are mixing it with a little grain and she is eating it just fine now.

  6. Aleira

    Posted by Unknown on Mar 6th 2017

    Good product. Has helped my 18yr old horse with heaves.

  7. Amazing

    Posted by Louise on Jan 16th 2017

    My TWH mare developed heaves after a bad respiratory infection. It seemed that each year she got progressively worse and had more triggers initiating her wheezing. It was so bad that I literally thought I was going to have to completely retire her. I had tried several medications but the only thing that could get her wheezing under control was steroid injections. Her triggers were numerous ranging from extreme heat or extreme cold, certain weeds, dust,etc. and it seemed overwhelming. I was constantly looking for something to get her heaves under control and hopefully a more natural remedy. My riding friend came across an article explaining the research and success rates that were being seen with Aleira. She gave me the contact information and I contacted the vet that had done the research. He connected me with Arenus and the rest is history. My mare improved immediately on Aleira. She went from needing shots every month to only receiving two shots in the last year. It was truly amazing and I am so thankful for this product. My mare has regained her health and I am riding her consistently without any problems. She is a somewhat picky eater but she eats this product just fine. I mix it in her feed every evening with just a very small amount of water. She eats every bit of it thank goodness. I have no intention of ever removing or decreasing this from her diet. I highly recommend it.

  8. So Far So Good

    Posted by Unknown on Jan 15th 2017

    Aleira has kept my horse breathing better so far during the winter months. The real test will be in the heat of the summer.

  9. Too early to tell but palatable

    Posted by leslie whitelaw on Jan 6th 2017

    My horse has Meed and my vet suggested beginning Aliera while he's off steroids for the winter. He's happy to eat it and I'll continue to until I can see if it is helpful when allergy season arrives.

  10. Miraculous

    Posted by Holly on Oct 31st 2016

    When in Wellington, several of the horses have a hard time adjusting. This has helped more than prescription medications for my non sweaters and heavy breathers in the barn. My Grand Prix gelding was put on this when nothing else was helping. He improved dramatically quickly. I have tried to go without it since, and he let me know that was not a good decision. It is now a must in his daily regimen and I couldn't be happier!

Showing reviews 1-10 of 19 | Next

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