Equine Osteoarthritis in Winter: How to Support Your Horse in the Cold

Why we believe this topic is so important: From practical experience, for practical use.

The people behind nuvallo are Katja and Andrés. With over 20 years of practical experience in equestrian sports, we know only too well that the cold, damp season brings special challenges for horses' joints. In this article, we provide you with easy-to-understand answers based on current research and real practical experience, so you can support your horse through the winter in the best possible way.

Why osteoarthritis in horses is particularly noticeable in winter: The scientific basics

To understand why the cold season places such a strain on our horses' joints, we need to take a quick look at their biology. A healthy joint essentially works like a well-oiled hinge. The ends of the bones are covered with a smooth layer of cartilage that acts as a shock absorber. In between is the joint fluid, also known as synovial fluid.

When temperatures drop, the consistency of this joint fluid changes. Imagine the principle is like engine oil in a car: if it is freezing outside, the fluid becomes thicker and loses its flowability. The joints literally become more sluggish. At the same time, the cold causes tissues to contract, and blood circulation in the already poorly supplied joint capsules decreases further. The supply of nutrients to the cartilage, which happens entirely through movement and the joint fluid, begins to stall.

For this reason, we often notice during the dark season that a horse comes out of the stable or paddock feeling stiff in the cold. The first steps seem awkward, the strides are shorter. It is particularly common to see a horse stiff in the hindquarters, as the large, weight-bearing joints here, such as the hock or stifle joints, need a particularly long 'warm-up time' when temperatures drop.

This knowledge is extremely important for us horse owners. As horses age, through sporting exertion, or simply due to deficiencies in their basic forage, tiny micro-damages creep into the cartilage. Winter is often just the catalyst that brings these invisible signs of wear and tear to the surface. If you understand the mechanisms, you can provide targeted support rather than just watching helplessly.

What does science say about joint support?

When it comes to joint supplements, the market is loud and confusing. But what remains if you ignore the marketing and look at the bare facts? Research provides us with a nuanced, but very exciting picture.

a) What has been proven in studies

In basic research – i.e., in the laboratory (in vitro) – the data is impressively clear. Researchers at renowned institutes like Utrecht University and Texas A&M University have investigated how cartilage cells (chondrocytes) respond to specific nutrients. When these cells are supplied with substances such as glucosamine, organic sulphur (MSM), or collagen peptides in a Petri dish, a clear stimulation of cartilage metabolism can be measured. The cells produce more of the body's important building blocks (glycosaminoglycans), which are responsible for the cartilage's elasticity. Laboratory results are fantastic proof that the biological mechanisms exist – but they do not automatically mean that a powder fed to the horse arrives one-to-one in the joint.

b) What has been studied in the living horse

Clinical studies on the living horse (in vivo) are even more exciting. Here, a group of horses is typically observed over a certain period. A well-known study by Forsythe et al. (2006), for example, investigated the effects of orally administered glucosamine and chondroitin in older horses over 12 weeks. The researchers measured stride length and joint flexion, finding measurable improvements in the group that received the active ingredients. Studies on MSM also often show positive effects on recovery time in horses under training loads.

At this point, we also need to take a brief look at human medicine. Many findings from osteoarthritis research in humans are transferred to horses, as the cartilage structure is very similar. In human medicine, there are large-scale studies involving thousands of patients that prove the positive effect of hyaluronic acid and collagen on joint comfort.

But honesty also requires us to admit: the methodological limitations in veterinary medicine are real. Equine studies are extremely expensive. Therefore, we often deal with small sample sizes (e.g., 20 to 30 horses), and there isn't always a perfect, double-blind control group.

c) An honest conclusion

So, what does this mean for us in practice? The biological foundation of joint nutrients is absolutely solid. Active ingredients like glucosamine, MSM, hyaluronic acid, and collagen are not miracle cures that can simply magically wave away cartilage damage. A damaged joint will not become brand new again. However, they are a highly sensible, scientifically founded building block for supporting the natural function of the joint and maintaining your horse's joy of movement. Research strongly suggests that these nutrients are particularly valuable when cleverly combined with one another.

Osteoarthritis in horses in winter: Dosage and practice

Let's take a look at the actual numbers, because this is often where the wheat is separated from the chaff on the market. In many basic studies, relatively high dosages of individual active ingredients are often used – for example, 10 grams of pure glucosamine per day for a large horse.

In daily feeding practice, however, two approaches have proven successful: the maintenance dose and the intensive course for acute phases. When you start with joint support – especially in the depths of winter – it is advisable to feed an 'initial course' at double the amount for the first two to three weeks to replenish the body's stores. After that, a lower maintenance dose is usually sufficient.

Why are the dosages in good combination products often slightly lower than in studies on individual active ingredients? This is due to the synergy effect. The active ingredients support each other in their absorption and processing within the body.

Here, however, a critical look at the market is essential: many products hide behind imprecise declarations. Unfortunately, EU Regulation 767/2009 on the placing on the market and use of feed allows manufacturers to group ingredients into 'categories' or omit exact milligram specifications per kilogram. You often just read 'herbal blend' or 'joint complex'. As a consumer, however, you should know exactly how much of the expensive active ingredient actually ends up in your horse.

The topic of patience is also important. Cartilage tissue has no direct blood supply and a very slow metabolism. No matter how high-quality the nutrients are, you should plan for a consistent feeding period of at least 8 to 12 weeks before you can make a reliable judgement.

Why individual active ingredients are often not enough: The power of combination

If we want to understand why a single powder often fails to bring the desired breakthrough, we need to view the joint as a team effort. The different active ingredients target completely different areas within the joint.

Glucosamine (1,500 mg per daily ration) is the classic building block for cartilage formation and supports natural shock absorption. Collagen (2,550 mg), on the other hand, is the ultimate structural protein; it forms the 'scaffolding' and ensures the elasticity and stability of connective tissue and cartilage. MSM (2,250 mg) provides organic sulphur, which is essential for the regeneration of tendons and ligaments. And hyaluronic acid (150 mg) acts as the main component of the joint fluid, ensuring the smooth gliding of the joint surfaces.

The fact that this combination is more powerful than the sum of its individual parts is demonstrated, among other things, by a well-known crossover study from the Animal Health Trust in Great Britain. In a crossover design, each horse serves as its own control (in different phases, it receives sometimes the supplement, sometimes a placebo). The researchers were impressively able to show that the combination of glucosamine, chondroitin, and MSM significantly improved stride length and mobility compared to individual doses or placebos. Long before the horse goes lame, such synergy can help keep its movement smooth.

The conclusion is therefore: a well-balanced combination product does not need extreme, isolated individual dosages. It uses nature's intelligence by supplying the joint holistically with all the necessary building blocks.

The biggest challenge in practice: Feeding

We explain the feeding problem

Every horse owner knows this frustration: you have done your research, bought a high-quality (and usually expensive) joint powder, and are now standing in the cold, damp light of the stable aisle. You measure out the dusty scoop and mix it into the feed. And then the battle begins.

Many active joint ingredients, especially organic sulphur (MSM), have an intense, often bitter taste. Our horses, naturally excellent at sorting their feed, smell a rat immediately. You start with the usual tricks: the powder is moistened with a dash of water, laboriously stirred into sugar beet pulp, or hidden in a hollowed-out apple. Sometimes you start with tiny pinches to slowly accustom the horse to the taste.

But often enough, we observe the same performance: the horse eats neatly around the prepared areas. The apple is eaten, the powder is spat out. In the end, you scrape together the sticky, expensive powder residue at the bottom of the feed bowl and ask yourself with concern: is the horse even getting half of the intended dose? Our hearts often bleed when we see the painstakingly chosen supplement just lying there in the trough. The constant uncertainty of whether you are actually helping your horse or quite literally throwing money down the drain frays the nerves.

Why we did away with powder

Out of precisely this personal frustration, and after talking to hundreds of desperate horse owners, we at nuvallo changed our perspective. The crucial question could no longer be: 'How do we make an even finer powder?' The real question had to be: 'How do we ensure that every horse ingests the full dose of active ingredients reliably and stress-free?'

The answer to this is nuvallo move Snacks – a functional joint snack that you simply feed straight from the hand. We have embedded the high-dose, scientifically backed active ingredients into a stomach-friendly base of linseed cake, rice bran, and linseed, which is rounded off with natural ingredients like banana, apple, and carob powder – completely free from wheat and corn.

The practical benefits are immense:

• No sorting possible: A daily ration of 6 snacks (approx. 30 g for a 500 kg horse) contains exactly the defined amount of active ingredients. What is eaten from the hand ends up 100% in the horse.
• High acceptance: Thanks to the natural carrier ingredients, the snacks are extremely palatable. The annoying tricks with apple sauce or soaked hay cobs are completely eliminated.
• Stress-free feeding: No weighing, no dust. The horse doesn't experience feeding as forced medication, but as a positive reward. Since we started feeding our own horses this way, we feel they are more supple in the mornings and start moving with more joy.

Because in the end, the best supplement isn't the one with the longest ingredient list on the label or the highest theoretical laboratory value. It's the one that reliably and completely ends up in the horse every single day.

Sources

Forsyth R.K., Brigden C.V., Northrop A.J. — Double blind investigation of the effects of oral supplementation of combined glucosamine hydrochloride (GHCL) and chondroitin sulphate (CS) on stride characteristics of veteran horses (Equine Veterinary Journal Suppl., 2006) Link

Byron C.R. et al. — Effects of glucosamine and chondroitin sulfate on mediators of osteoarthritis in cultured equine chondrocytes (American Journal of Veterinary Research, Michigan State University, 2003) Link

Marañón G. et al. — The effect of methyl sulphonyl methane supplementation on biomarkers of oxidative stress in sport horses following jumping exercise (Acta Veterinaria Scandinavica, 2008, Universidad Complutense de Madrid) Link

Dobenecker B. et al. — Specific bioactive collagen peptides (PETAGILE®) as supplement for horses with osteoarthritis: A two-centred study (Journal of Animal Physiology and Animal Nutrition, 2018) Link

Bergin B.J. et al. — Oral hyaluronan gel reduces post operative tarsocrural effusion in the yearling Thoroughbred (Equine Veterinary Journal, 2006) Link

Safety and quality you can rely on

When supporting your horse's joints, you shouldn't make any compromises. nuvallo move stands for absolute transparency:

• ADMR compliant with no withdrawal period: Safe for sport and competition horses.
• No added sugar & no fillers: No hidden fattening ingredients, free from wheat and corn.
• Made in Europe, highest quality: Produced under the strictest quality standards.
• 30-day satisfaction guarantee: Because we know that real results build trust.