Glucosamine vs MSM for an Arthritic Horse
Two of the commonest joint supplement ingredients, what the research actually supports, and the cheaper intervention that outperforms both.
The short version
Be honest about the evidence: oral joint supplements in horses have produced mixed and generally modest results, and neither ingredient has the support that marketing implies. MSM is cheap enough that a trial costs very little. Glucosamine combinations that include chondroitin and avocado soybean unsaponifiables have somewhat more published work behind them and cost considerably more. Before either, get the diagnosis right and address the things that do work: appropriate veterinary pain relief, consistent gentle movement rather than stop start exercise, farriery and balanced trimming, and keeping the horse at a sensible weight.
Cosequin ASU Joint Health Supplement for Horses
About $60
Check price on AmazonAt a glance
| Cosequin ASU Joint Health Supplement for Horses | AniMed Pure MSM, 5 lb | |
|---|---|---|
| Cost per month | Higher | Low |
| Published equine research | Some, mixed results | Limited |
| Time before judging it | Six to eight weeks | Six to eight weeks |
| Palatability | Usually accepted | Slightly bitter to some horses |
| Replaces prescribed medication | No | No |
| Competition rules | Check your governing body | Check your governing body |
Choose the Cosequin ASU Joint Health Supplement for Horses if…
Choose a combination product if you want the version with the most published equine work behind it and the budget allows. Give it consistently at the labelled loading and maintenance doses, change nothing else at the same time, and judge it after six to eight weeks on something measurable such as how the horse moves out of the stable in the morning. Tell your vet what you are feeding, particularly if the horse is on a prescribed anti inflammatory.
Check Cosequin ASU Joint Health Supplement for Horses on Amazon
Choose the AniMed Pure MSM, 5 lb if…
MSM is the low cost option and a reasonable thing to trial, provided you accept that the evidence is thin and you are prepared to stop if nothing changes. Introduce it gradually since some horses object to the taste. Do not stack multiple supplements containing the same ingredients, which is easy to do when a senior feed, a joint supplement and a hoof supplement all contribute. Add up what the horse is actually receiving before adding anything new.
Check AniMed Pure MSM, 5 lb on Amazon
Related
Comparison based on published manufacturer specifications and the general consensus of owner reports. We have not tested these products side by side. Confirm current specifications and prices before buying. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
For a product that combines both, our Cosequin Optimized with MSM review covers the formulation, the timescale for judging it and why weight and turnout do more than any supplement.
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Cosequin ASU for the Older Horse
The joint supplement with the most research behind it in horses, combining glucosamine and chondroitin with avocado and soybean unsaponifiables. Worth starting before an older horse is visibly stiff rather than after.
Frequently Asked Questions
What helps an arthritic horse most?
Movement, weight control and veterinary pain management, in roughly that order. Turnout and consistent light work keep joints mobile in a way that box rest does not, and every extra kilogram is load on a worn joint. Your vet has options ranging from oral anti inflammatories to joint medication, and those have evidence that oral supplements do not. Supplements sit alongside that plan rather than replacing it.
Can I give my horse a human joint supplement?
It is generally poor value and can be risky. Doses are formulated for a person, so reaching an equine dose takes an impractical quantity, and human products can contain flavourings and additives that are not appropriate. Some also contain substances prohibited under competition rules. Buy an equine product and check the ingredients against your governing body's list if you compete.
My old horse is suddenly much stiffer than usual. Is that arthritis progressing?
It might be, but a sudden change deserves a vet rather than a supplement. Acute stiffness can indicate laminitis, a foot abscess, muscle disease, Lyme disease in some regions, or an injury. Arthritis usually worsens gradually. Anything that appears over a day or two, or that comes with heat, swelling, reluctance to bear weight or a change in demeanour, is a call to make today.
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