Are Supplements for Horses Worth It?

EMays wrote to me to ask about equine supplements. I see alot of my friends using supplements on their horses. Based on my history using human health supplements for myself, I think that some are probably good for horses and necessary to make up (nutritional) deficiencies, while others may be a waste of time. What is your opinion on generally good supplements for horses? Thank you for your time."

I pretty much believe that less if better when it comes to supplements in general, and even non-forage feed for that matter. But I also believe some horses, like humans, can have nutritional deficiencies and chronic conditions that may likely be helped with equine supplements. I am also inclined to think that a supplement that works for one horse does not necessarily work for another horse as there are way too many variables such as age, physical condition, previous injuries, feeding program, and what the horse is used for. Another variable is just how much you are willing to spend.

Years ago my horseshoer introduced me to a Doctorate student who was riding with my shoer to keep his own horseshoeing skills current. This Doctorate student, who was heading for an advanced degree in Ruminant Management and Equine Nutrition or some closely related field, also grew up working on ranches and feed lots in the mid-West, was a wealth of information on equine nutrition. Since I had a 20+ year old horse who had broke a coffin bone wing which my shoer was bringing back to soundness with a bar shoe, I asked about hoof supplements thinking it may be a good idea to get this horse on a supplement that would help heal his broken foot.

The Doctorate student told me that he believed hoof supplements were likely effective especially if they had key ingredients like biotin, L-Methionine and L-Tyrosine and some others. He also told me that the jury is out on joint supplements. However, he said it was likely that Chondroitin and Hyaluronic Acid were not effective in horses, but Glucosamine could be. My experience with human joint supplements tell me the same thing, that Glucosamine and Vitamin C are the main effective ingredients in joint supplements. This Doctorate student also said that it was hard to get the industry to fund objective studies since they could be funding a study that would conclude that supplements improving horses were inconclusive or worst yet, not effective. 

By the way - I ended up putting that old horse with the coffin bone break on hoof supplements. Nine months later it came time to quit the barshoes, get an x-ray and see what the hoof looked like. My Vet told me not to get my hopes up, but when I went to his office to get the results he said words to the effect that "I'll be damned that old horse's hoof has healed - no reason you can't start using him now."

I also put another horse on hoof supplements and months later my horseshoer remarked that I should keep doing what I'm doing because that horse's feet were looking good from his perspective. Keep in mind that no hoof supplements are more important that consistent, competent trimming and shoeing......but I think it could help and that leads me to the saying that "proof is in the pudding".

I also have had a horse on joint supplements for the past year. I chose a version high in Glucosamine and Vitamin C and without Chondroitin and Hyaluronic Acid. I think it is helping but it is hard to tell. For sure, he is making more athletic turns such as doubling on the fence, but it could also be because we do more of that. But, I'm going to keep him on it. I think I owe him the benefit of any doubt. If that particular joint supplement started costing an exorbitant amount of money, then I could rethink that, but right now about $35-40 a month is worth it me on the chance it is providing that horse with nutrients good for his joints, and in particular, his cartilage and soft connective tissue.

The bottom line for me is that if any of my horses had a particular condition that may be helped with supplements, then I would try it for awhile. Awhile is not weeks, but months,....if not a year or more. And even then it may be hard to tell if your horse is being helped. Out of six horse's, I have one on daily hoof and joint supplements. Two other horses receive a weekly pro-biotic paste because I think they can benefit from it.

I use Smart Pak supplements. They package my daily supplements in one handy string of multiple containers - see picture upper left. Smart Pak has some good resources available on their web site to include a blog with categories like 'Asking the Vet', to 'Success Stories' from owners using supplements with their horrses and how they fared.


Smart Pak is a very customer oriented and responsive company.  Advisors are available to discuss supplements over the phone and help you choose what may be best for your horse.  The UPS truck brings my supplements every 28 days and I even get an e-mail to my phone when they are delivered so I can walk out to my main gate to retrieve the package.   I have no financial arrangement with Smart Pak other than they have donated to charity based horse event I have ran.  

James Question on Horse Joint Supplements

James wrote to Functional Horsemanship and asked, I don't believe joint supplements for Horses work, as I have tried several different brands for a few years, but if you have had some good luck with a particular brand please let me know as my 20 year old mare, a Tennessee Walking, is really getting stiff.

James, I would have a good horse vet look at your mare to figure out if there are any detectable problems causing your mare to be stiff, but 20 years is a fairly old horse.  Some stiffness and crepitice, which is the creaking and cracking sound in the joints, would be normal.

I have talked to both human and equine scienitists about joint supplements. What I have been told and believe is that,
1 - There are minimal trials and data on joint supplements. The manufacturers of these suppplements are kinda reluctant to fund independent research because there is the chance the research would come back as ther products not helping what they claim - kinda like funding your own funeral.  There is plenty of anecdotal or personal testimony of joint supplements that work, just without the provable data.  
2 - Most of the scientists, both horse related and human, that I have talked to believe that Glucosamine works to strengthen cartilage and actually rebuilds it slowly, but are pessimistic about the two other common joint supplements, Chondriotin and Hyluaonic Acid, having much help on joints.
3 - that quality of the product is the key.

I believe there are some joint supplements that help horses. I think that a horse would have to be on a quality product for at least a month to get any benefit and even then it may be hard to tell if it is helping. I had a similar aged ranch horse who had a front knee injury. I put him joint supplements as I rehabilitated him. He seemed to be doing much better after a couple months where I could team rope off him. I was unsure if the progress was related to his rehabilitation (exercise and good feed) or the joint supplements. I now tend to believe it was a combination of both.

If it doesn't put you out too much, I would try another joint supplement program for a few months and see what it does. Just pick a quality product with a high level of Glucosamine and at least some sort of outside approval, such as NASC or GMP. I think that a product with Vitamin C would be preferable. Vitamin C is an anti-oxidant that is thought to be good for connective tissue health.  MSM or Methylsulfonylmethane is a sulfur compound and another common joint ingredient.  Some think that MSM helps in the organic synthesis possibly helping other joint compounds get into the joints and tissues, and helps reduce inflammation.  I am waiting to be proved if MSM works in any capacity. 

Smart Pak is a company that offers supplements and information on all sorts of products. Click on the link to see a chart of joint supplements broken down by form (pellets or powder), ingredients, seals of approval and cost.  I have one of my horses on a joint supplement presently and I think the small cost is worth the possible benefits to the horse.  

Yucca and MSM in Horse Joint Supplements

Richard wrote me to ask about using MSM and Yucca for his 17 year old Gelding who he had been using as a roping horse but now appears to be having trouble in his joints.

Seventeen years old, on a sound horse, can be yesterday's twelve year old, meaning it seems like more horses are not only living longer but are being used much more into thier late teens and twenties. But hard use can be hard on a horse's joints, more so when combined with less than adequate nutrition.

MSM (Methylsulfonylmethane) and Yucca are common ingredient in Horse joint products.

MSM (Methylsulfonylmethane) is marketed to provide joint comfort and cartilage health. MSM is a type of sulfur and thought to be a ingredient necessary for collagen health or development. MSM is also an anti-inflammatory and therefore probably reduces pain to some extent.

Yucca (see picture at top of post) is a common plant found out here in the desert where I live. It is readily identified by it's stalk and flowers (see photo at right). The flowers,or sometimes called Yucca bulbs, grow in the late spring and are moist. They become dry in the winter and often break apart in the wind, spreading seeds that are almost black in color. The moist bulbs are edible by humans and cows. They taste like lettuce. I had a horse who loved to pick at Yucca bulbs but too much is not good for them so I would only let him eat one or two on any one day.

Yucca is an anti-inflammatpry and pain reducer. Which, like I wrote above, is often found in joint supplements, for humans as well as horses. In fact, if you a section of Yucca base (see picture left) from which the sharp spines grow out of, or what is below that and growing from the ground, you can harvest a section of it and scrap out the inner pulp like material and mix in water. It will make a soapy type of solution. This will make arthritic hands feel better and can be used to rub on a horse's legs after a long ride. I suspect some people figured that out a long time ago and probably did just that.

In any event, both MSM and Yucca can mask the pain from joint issues. Most reports from independent scientists either cannot confirm or don't believe that MSM or Yucca can be consumed with any benefit, but if they are wrong, and you decide to use either, then consider that neither product has much of a chance of helping if you don't get a high quality source of these ingredients.

The scientist's I have talked to do believe that a quality Glucosamine product and Vitamin C work to provide nutrients for joint health and can actually build stronger connective tissue and cartilage. Sure, if you have have a horse with extensive wear on his joints, like race horses and arena roping horses, Glucosamine probably won't give immediate relief. Hence the possible use of the natural pain relievers and anti-inflammatories.

I would get a Vet to check your horse. Sometimes x-rays can give you a good idea on what going on in your horse's joints. I have one horse, 19 year old gelding, currently on joint supplements. It is a Glucosamine based product and I think it is helping him to some extent. But this is a treatment that I think you may have to do for six months or more to see any result.  Let me know if you begin using something and how your horse does on it.  Safe Journey.

The Basics of Horse Nutrition - Joint Supplements

At some point in the horse’s life the owner may consider putting the horse on joint supplementation. Not all horses need joint supplementation but some of the one’s that could use it are: horses that have been started very young maybe before their bones, cartilage and tendon endings reached full maturity – race horses come to mind; horses that been used hard and regular for a long time; horses that have suffered some trauma or injury to their joints; and, very old horses.

In developing what I think I know about joint supplements, I have basically used three sources: horse experienced students in Ruminant or Equine management or Ag related studies at the local University; Scientists at a human nutritional supplement manufacturing company; and, personal experience from using and watching horses placed on joint supplements.

Most of the horse joint supplements on the market today will contain some of all of the following ingredients: Glucosamine, Chondroitin, Methylsulfonylmethan (MSM), Hyaluronic Acid, Vitamin C, Manganese, and Silicon. The following is a short description of each:

Glucosamine is an amino acid that the body produces naturally and is an ingredient used in the building and repair of cartilage.

Chondroitin is found in the cartilage, helpful for a healthy cartilage and is thought to help prevent or slow the deterioration of cartilage.

Methylsulfonylmethane (MSM) is sometimes thought to be a pain reliever but most Vet’s will tell you that it is an anti-inflammatory agent.

Hyaluronic acid is thought to be related to the production or retention of the natural fluid found in the joints.

Vitamin C, Manganese, and Silicon are thought by some to provide additional nutrients necessary for optimal joint health.

So do Joint Supplements actually work? And what do all these chemicals or ingredients mean to the Horse Owner wanting to put their horse on Joint Supplements.

The short answers are: University students tell me there are virtually no independent studies on whether or not joint supplements work on horses – the key word here being independent studies. However I have been consuming pharmaceutical grade Glucosamine, combined with Vitamin C, and found a very significant reduction in pain in my knees. I have asked questions of scientists from the company that manufacture this product and they tell me that they know Glucosamine works but do not include the other common joint ingredients either because the price would be too significant or they cannot reasonable prove the other ingredients work. As far how joint supplements work on horses, I have an old roping horse, coming 27 years this spring, and who has had several injuries in the past, on joint supplements and I see a good deal improvement. More athleticism and less toe drag on his previously injured front leg.

Aside from structural damages which any supplement probably won’t affect, I believe that good quality joint supplements can give your horse a chance at healthy joints and a possible reduction of pain. This may make a horse useable again if he wasn’t previously. You should be prepared to give any test a decent length of time, such as maybe a month or more before you make a final determination if the product helps.

I have used many products on different horses over the years. The product I am now using is Corta-Flx Pellets. I use pelleted supplements rather than powder as I think there is less waste. Corta-Flx, while not technical manufactured with Glucosamine, Chondroitin, or MSM, the company uses isolates from these ingredients producing smaller molecules for better assimilation and utilization. This product also has Hyaluronic Acid.



At roughly $25 for a 40 day supply, I think it is well worth the test on your horse.