Joint care for dogs: what actually helps, and what the evidence says

Dog joint supplements are one of the most heavily marketed products in pet care, and one of the hardest to judge honestly. Which ingredient actually matters, how much of it a product should contain, and whether any of it helps a particular dog are questions that most packaging does not answer.

This guide works through them in the order that matters. Weight, movement and food come before any supplement, because they are the three things that reliably affect how a dog's joints feel day to day. Then it looks at the published research behind each common ingredient — glucosamine, chondroitin, MSM, hyaluronic acid, green-lipped mussel and omega-3 — including the places where that research is weak or openly contested. There is also a section on choosing between products, a section on what vets actually do for arthritis, and the ten questions people ask most often about dog joint supplements.

A note on our own interest. Flux Trading sells dog food and joint supplements, including the YuMOVE range referenced further down. Where this guide mentions a product we stock, we say so, and we give the price and the date we checked it. Where we have used a manufacturer's own claim about their product, we have attributed it as their claim rather than as a finding.

What are the early signs of joint problems in dogs?

The first signs of a joint problem are usually small changes in movement that owners put down to the dog simply getting older. Stiffness after a rest, a reluctance to jump, a slower rise, a changed gait on the stairs and less enthusiasm for walks are all worth writing down. Catching these early matters, because by the time a dog is visibly limping the changes in the joint are well advanced.

• Getting up stiff after a rest, then easing off after a few minutes.
• Reluctance to jump onto the sofa, the car boot or a step they used to take without thinking.
• Slower or more deliberate use of stairs, with a pause part way up.
• Shortening walks, or stopping part way through a route they used to manage.
• Lagging behind on a walk that used to be easy.
• Stiffness that is worse after a cold or damp night.
• Front legs held stiffly, or a hunched posture on standing up.
• Unusual licking at a joint, or a dog that pulls away when that area is touched.

Not every one of these means arthritis. Paws, claws and the spine can produce similar signs, and so can a dog in pain somewhere else entirely. But a change in behaviour is worth taking seriously in its own right. The RSPCA notes that a change in behaviour can be an early sign of illness or pain and advises contacting a vet promptly. A dog that has stopped greeting you at the door, or has started snapping at other dogs, is telling you something even if the cause turns out not to be a joint.

It also helps to write down a baseline before you change anything. Note how quickly the dog rises, how it uses stairs, how long it will walk before stopping, and how it gets into the car. Without a starting point you have nothing to compare against later, and most owners are simply bad at noticing gradual decline.

How do dog joints change with age?

A dog's joints are built to last a working life, and most are asked to do more than that. Cartilage covers the ends of the bones and absorbs shock, synovial fluid lubricates the joint, and when the cartilage thins and the bone beneath it begins to change, the result is osteoarthritis. That is the most common joint condition in older dogs, and it is progressive rather than curable.

Cartilage is the firm, slippery layer of tissue that covers the ends of the bones inside a joint. It has no blood supply of its own and no nerve endings, which is why a damaged joint can deteriorate slowly without the dog showing anything obvious until the changes are well advanced.

Synovial fluid is the clear liquid inside the joint. It lubricates the surfaces so the bones glide rather than grind, and it carries nutrients to the cartilage.

Osteoarthritis is the name for the process that follows when cartilage breaks down. It is not the same as rheumatoid arthritis, and it is not simply a joint wearing out, although an earlier injury can speed it up considerably.

Age is the background factor rather than the trigger on its own. Dogs Trust treats dogs over seven as senior, meaning older but generally still in good health, and dogs over twelve as geriatric, at greater risk of health problems, against an average dog life expectancy of about twelve years. UK Pet Food notes that from about seven years old dogs start to experience a decline in the function of certain organs. Large breeds, working dogs, dogs with a previous injury and overweight dogs carry more risk, and they tend to benefit from earlier support.

Which ingredients support dog joint health?

Six ingredients account for most of what is sold as a dog joint supplement, and they are not equally well supported. Omega-3 fatty acids have the best evidence behind them for relieving joint pain. Green-lipped mussel has moderate, formulation-specific evidence. Glucosamine and chondroitin have been recommended for two decades, but a 2022 systematic review found their trial results showed a marked lack of effect. MSM and hyaluronic acid have the least, and collagen is weak.

Sources for the table: Barbeau-Grégoire et al. 2022; Vandeweerd et al. 2012; Aragon et al. 2007; Sanderson et al. 2009; Bhathal et al. 2017; Hielm-Björkman et al. 2011; Rialland et al. 2013; Corbee et al. 2022. Full references at the end of this guide.

Does glucosamine help dogs' joints?

The honest answer is that it might help some dogs, but the evidence behind the enthusiasm is weak and the better-controlled studies do not support it. A 2007 review in the Open Veterinary Journal concluded that there is only very weak clinical trial evidence to support glucosamine and chondroitin for osteoarthritis in dogs. Two years later a randomised double-blind trial of 35 dogs did find significant improvements in pain, weight-bearing and severity scores by day 70. A 2022 meta-analysis reached the opposite conclusion, finding 88.9 per cent non-effect and no effect at all in the chondroitin-glucosamine trials it assessed, and recommending that these products should no longer be recommended for pain management. Most veterinary nutritionists still use them, for slowing progression rather than for pain relief.

Two practical points follow. First, if you do use glucosamine, it is a long game rather than a quick one: the same review notes that it has been suggested that two to six weeks of treatment may be needed for any effect to become apparent, while noting there is a lack of clinical evidence to support that statement either. Second, the salt form matters, and so do the other ingredients on the label. The hydrochloride salt provides more glucosamine per gram than the sulphate salt, while the sulphate salt is often stabilised with sodium or potassium chloride, which may be unsuitable for older dogs with heart failure, hypertension or renal decline.

What is the role of chondroitin in joint health?

Chondroitin is a glycosaminoglycan that helps cartilage hold water and retain its elasticity, and it is almost always sold alongside glucosamine rather than on its own. The evidence question is therefore the same one, because most of the trials studied the two together. A 2023 randomised trial of 75 dogs with hip osteoarthritis is the clearest recent test: the glucosamine and chondroitin group sat between the placebo group and the drug group on peak vertical force, while the marine-based fatty acid products and carprofen all beat placebo. Ingredient presence is not evidence of effect, and that trial is a good illustration of the difference.

Can omega-3 fatty acids support dog joint health?

Yes, and this is the strongest evidence in the category. The 2012 systematic review of nutraceuticals for osteoarthritis in horses, dogs and cats rated the strength of evidence as low for every nutraceutical except omega-3 fatty acids in dogs. The 2022 meta-analysis found omega-3 nutraceuticals stood out in terms of effect, alongside omega-3-enriched diets. The MSD Veterinary Manual states that EPA supplementation of 50 to 100 mg/kg by mouth every 24 hours, and EPA-rich diets, have been shown to improve gait and mobility in dogs and to have an NSAID-sparing effect. One caution from the same source: this kind of supplementation should be reserved for pets at a healthy weight.

Cornell's Riney Canine Health Center puts it plainly: the supplement with the most support in the literature currently is omega-3 fatty acids from fish oil, with a recommended daily dose of one teaspoon per 20 pounds of ideal body weight. Because fish oil products vary in concentration, follow the label and ask your vet about the specific product rather than working from a rule of thumb alone.

What is green-lipped mussel and why is it used in dog supplements?

Green-lipped mussel is a powder made from the New Zealand mussel Perna canaliculus. It contains omega-3 fatty acids, minerals and glycosaminoglycans, and it is the ingredient behind the one nutraceutical that has been tested against carprofen in a randomised trial: 45 dogs with radiographically confirmed osteoarthritis were randomly allocated to green-lipped mussel, carprofen or placebo for eight weeks. More dogs improved on green-lipped mussel than on placebo across three measures, and the authors concluded that it alleviated chronic orthopaedic pain, although it was not as effective as carprofen. No side effects were detected in that trial.

The important word is formulation. A 2022 trial of a specific green-lipped mussel, curcumin and blackcurrant leaf combination found that while dogs improved against baseline, they did not differ from the placebo group, and the authors called the effect only partial. The 2012 systematic review also graded the evidence as low for nutraceuticals generally, with the single exception of omega-3. So green-lipped mussel is a reasonable second choice, but the specific product studied is what carries the evidence, not the ingredient on the label.

What about MSM, hyaluronic acid and collagen?

These three are the weakest links in most joint supplement formulations, and they are worth knowing about before you pay for them. MSM is a dietary sulphur compound with unclear mechanisms, and the number of canine trials of MSM on its own is very small. Hyaluronic acid is a component of synovial fluid, and the evidence review that assessed it concluded that an extremely low level of comfort exists for hyaluronan. Collagen-based nutraceuticals showed weak efficacy in the 2022 meta-analysis. None of that makes them dangerous. It makes them the parts of a product that are hardest to justify on price.

What does the research actually show about joint supplements?

Read across the reviews and the picture is consistent. The ingredients that most dog arthritis supplements are built from are generally safe and well tolerated, and generally not shown to work, with omega-3 fatty acids the single exception. The 2012 systematic review of 22 trials concluded that the evidence of efficacy of nutraceuticals is poor, with the exception of diets supplemented with omega-3 fatty acids in dogs. The 2022 meta-analysis of 72 trials reached the same conclusion in stronger terms for glucosamine and chondroitin.

Two findings explain why some owners are certain their supplement worked. The first is the placebo effect. Today's Veterinary Practice summarises a study in which some owners perceived huge improvements in osteoarthritis even when their dogs were given a placebo, which questions the validity of anecdotal success. The second is that the veterinary treatments that do work are being taken at the same time. In a 71-dog trial comparing a nutraceutical against carprofen and meloxicam, ground reaction force in the arthritic limb improved significantly with both drugs but not with the nutraceutical, and only meloxicam returned the values to normal. Owners judged improvement with meloxicam alone.

None of that makes a supplement pointless. It makes the claims narrower than the marketing suggests. A supplement is a reasonable, low-risk addition to a plan for a dog with mild stiffness, once weight, movement and food have been addressed. It is not a treatment, and a product that promises to rebuild cartilage or reverse arthritis is making a claim the evidence does not support.

Can food alone support your dog's joints?

Often, yes, at least as a foundation. Several complete dog foods are manufactured with declared quantities of joint-support ingredients, and for a dog with mild stiffness that is a sensible first step, because it arrives in every meal rather than depending on the dog accepting a tablet every day. It is also the cheapest way to add these ingredients and the easiest to keep up.

The table below lists the complete foods we stock that declare joint-support ingredients, with the amounts the manufacturers state. An ingredient without a figure is not something you can compare or plan around, which is why the quantity column matters more than the ingredient list.

Prices are Flux Trading store prices, checked on 3 November 2026. They can change. Each quantity is as stated by that food's manufacturer.

Skinner's Light and Senior declares the most, and it is also a lower-energy recipe, which matters for exactly the kind of dog that tends to develop joint problems. It can be fed alone or mixed with Skinner's wet food at any ratio, which makes it easier to introduce. Our guide to senior dog food covers how the needs of an ageing dog change, and our guide to specialist dog food covers the recipes built around a specific constraint.

Two caveats. First, a joint-support food is not a veterinary diet, and no food sold over the counter should be used in place of one your vet has prescribed for a diagnosed condition. Second, if you feed a food that already declares glucosamine and chondroitin, adding a supplement containing the same ingredients on top is usually paying twice for the same thing.

How does weight affect a dog's joints?

Weight is the factor you control most completely, and it is the one veterinary guidance puts first. The MSD Veterinary Manual describes weight optimisation as the primary preventive method for slowing the development of osteoarthritis in dogs, and states that the primacy of even very modest weight loss in improving function in overweight dogs with osteoarthritis is well established. The reason is mechanical and inflammatory at once: extra load is carried through every step, and excess fat cells release pro-inflammatory mediators that help perpetuate the inflammation in the joint.

That is also why a supplement cannot outrun a weight problem. A dog carrying extra weight is loading the same cartilage harder on every walk, and adding glucosamine to that picture changes the arithmetic very little. This is the first thing to sort out, and it is the one step where you do not need to spend anything.

It is also where the honest advice is to use your vet rather than a food label. Body condition scoring, a target weight, and a rate of loss that will not lose muscle are all things a vet or a veterinary nurse can set with you. Our guide to senior dog food covers the lower-calorie routes for older dogs, and note that our BETA Large Breed Adult is formulated to help maintain a lean body mass for a large breed dog.

Which joint supplement suits which dog?

If you are weighing up joint supplements for dogs, there is no single best product, because the right choice depends on the dog's age, the signs you are seeing, what the food is already providing, and, more often than anything else, whether the dog will actually take it. Match the product to the dog rather than the other way round, and start by checking what the food already covers.

Two practical decisions come first. The first is format. Tablets are cheaper per day than chews; chews cost roughly the same per tablet but remove the daily argument with a dog who will not swallow them. The second is whether a supplement is needed at all: a dog already on a food that declares glucosamine, chondroitin and fish oil may be better served by keeping the food and skipping the supplement.

These are the four dog joint supplement products we stock. The manufacturer describes the Adult and Senior tablets as daily supplements containing a blend of omega-3s, intended to soothe stiff joints, support joint structure and maintain mobility, and describes the Max Strength products as 50 per cent stronger than the standard YuMOVE Joint Support PLUS formula. The chew contains the same active ingredients as the MAX tablets, and the manufacturer notes that many owners struggle to get a dog to swallow a tablet and end up hiding it in food for the dog to find later.

Prices are Flux Trading store prices, checked on 3 November 2026. They can change. Per-day figures assume one tablet or chew a day, so a 120-count pack lasts about four months. Product descriptions and stated purposes are the manufacturer's, not ours.

Two things to note about that table. First, it is a list of what we stock, not a ranking, and this guide does not claim any of them is the strongest available product on the market. Second, we have deliberately not listed per-tablet ingredient quantities here. The manufacturer's current product pages do not publish a per-tablet breakdown, and we would rather leave the figure out than publish one we cannot stand behind. If you want to see how these products compare with other brands on ingredients and quantities, that is the subject of YuMOVE versus other dog joint supplements.

How do you compare dog joint supplements?

Compare the label, not the front of the pack. Seven things tell you more than the branding does, and they are worth checking before you buy anything for a second or third time.

1. What is in it, and how much? Look for a specific quantity per serving, not a list of ingredients with no amounts. A product that will not state a dose cannot be compared with one that does.
2. Is the amount per day realistic? Compare what the label says against what your dog would need. Reference doses published for dogs are around 25 mg/kg or more of glucosamine, 15 to 20 mg/kg of chondroitin, more than 10 mg/kg of MSM and 30 mg/kg of green-lipped mussel, but these are reference figures from a veterinary publication rather than a dosing instruction for an individual dog.
3. Is the ingredient in a form that has been studied? For green-lipped mussel this matters more than for anything else. A product that does not name the form has not given you the information the trial used.
4. Does it carry an independent quality mark? Cornell advises using a brand recommended by your vet, or one that bears the National Animal Supplement Council seal, because the NASC monitors its members to ensure the ingredients in approved products match what is on the label.
5. Is there evidence for this product, or only for the ingredient? These are not the same, and most marketing blurs them.
6. Will your dog take it? A tablet left in the bowl is not a dose. If the dog spits it out, the chew format costs more per day but works better than the tablet you have wasted.
7. What does it cost per day? Divide the price by the number of days in the pack. A four-month pack of 120 at 30p a day is a lot cheaper than it looks, and a 60-tablet pack at the same sticker price is not.

One red flag worth knowing: some over-the-counter joint products contain aspirin or other cyclooxygenase-inhibiting agents, which matters if your dog is already on an anti-inflammatory from your vet. If your dog takes any medication, tell your vet what is in the supplement before you start it.

How do vets approach arthritis in dogs?

Veterinary treatment of canine osteoarthritis is not a supplements conversation. The usual sequence is to confirm the problem, take weight seriously, manage pain with medication where the dog is in pain, and only then treat nutrition and supplements as part of a longer-term plan. Supplements occupy a supporting position in that sequence, not a leading one.

The 2009 systematic review of the management of canine osteoarthritis assessed 68 papers and found a high level of comfort, meaning strong evidence, for carprofen, firocoxib and meloxicam, and a moderate level of comfort for etodolac. The MSD Veterinary Manual is more direct still: NSAIDs are the most predictably effective treatment for osteoarthritis. It also notes that in dogs with mild clinical signs, at least a month of NSAID treatment may be needed before attempting withdrawal, and that in dogs with moderate to severe signs they may be used on a more sustained basis.

That is the standard of care for a diagnosed arthritic dog, and it is why a supplement cannot be described as an alternative to it. Where omega-3 has a clear place is alongside that treatment, partly for its own effect and partly because the Veterinary Manual describes EPA supplementation as having an NSAID-sparing effect. For a dog in pain, the realistic order is diagnosis, weight, veterinary pain relief, and then the extras.

Twice-yearly check-ups for an ageing dog are described by Dogs Trust as essential, and they are the point at which a developing joint problem is most likely to be picked up early. A 2024 review of non-pharmaceutical and non-surgical treatments for canine osteoarthritis covers the wider management picture, including weight management, therapeutic exercise, hydrotherapy and physiotherapy.

Which lifestyle changes help dog joints the most?

The changes that help most are unglamorous, free, and easy to stop doing. Dogs Trust's advice for older dogs is to let the dog set the pace, and to think about the surfaces and the furniture as much as the exercise.

• Let the dog set the pace. Walk at the dog's speed rather than yours, and split one long walk into several short ones.
• Choose the ground. Grass and sand are kinder to worn joints than concrete. Repeated stair climbs and running on hard surfaces are the harder version of the same exercise.
• Use ramps and steps. For the car boot and for stairs, a ramp takes the load off the joints rather than adding to it.
• Provide somewhere comfortable to lie. A supportive bed matters more for a large or heavy dog than for a small one, because the weight has to be supported all night.
• Raise the bowls. For a dog that struggles to bend down, raised bowls reduce the angle at the shoulder and the neck.
• Watch the flooring. Rugs and non-slip runners on smooth floors reduce the slipping that makes a dog distrust its own legs.
• Keep the weight steady. Repeated gain and loss is harder on joints than a stable, lean body.

None of this replaces the first two sections, but it is the part most owners can change this week, and it is free.

When should you see a vet about your dog's joints?

See a vet rather than starting a supplement if any of the following apply, because each one points to something that needs diagnosing rather than supporting. The rule of thumb is that a change which comes on overnight needs checking quickly, and a change which has crept in over months still deserves an examination.

• The dog will not put weight on the leg at all, or is repeatedly licking at one joint.
• A sudden inability to jump, or a sudden reluctance to use the stairs.
• A joint that looks swollen, feels hot, or is painful to touch.
• A limp that has not settled within 24 hours.
• A change in behaviour such as not greeting you, hiding, snapping, or a change in housetraining habits.
• A dog that has stopped eating, or is drinking more than usual.
• A limp in a dog under 12 months old, where growth plates are still open.
• A dog whose weight has not fallen despite a consistent change of diet.

Conditions such as cruciate ligament damage, hip dysplasia and intervertebral disc disease need diagnosis and proper treatment, and they can all present as stiffness. A supplement will not tell you which of them you are dealing with.

Frequently asked questions about dog joint care

These are the ten questions people ask most often about dog joint supplements, answered directly. Where the full answer is longer than a sentence, the section it comes from is named so you can read it properly.

Do joint supplements really work for dogs?

Some do, some do not, and the difference is the strength of the evidence rather than the marketing. Omega-3 fatty acids have the clearest support for helping joint pain in dogs. Glucosamine and chondroitin, recommended for two decades, have weak and contested evidence, and a 2022 meta-analysis concluded they should no longer be recommended for pain management. No supplement has been shown to reverse arthritis or rebuild cartilage.

What is the best joint supplement for dogs?

There is no single best product, because the best answer depends on the dog and on what the food is already providing. The evidence points to omega-3 as the ingredient with the strongest support, and green-lipped mussel as a reasonable second choice where the product states the form that has been studied. The rest is a matching question: tablet or chew, and what the dog will actually take. We sell the YuMOVE range, and we set out the four dog products we stock with today's prices below.

What do vets recommend for arthritis in dogs?

Most veterinary guidance puts four things ahead of supplements: a proper diagnosis, weight management, veterinary pain medication where the dog is in pain, and then nutrition as part of a long-term plan. The MSD Veterinary Manual describes non-steroidal anti-inflammatory drugs as the most predictably effective treatment for osteoarthritis in dogs, and a 2009 systematic review of 68 papers found strong evidence for carprofen, firocoxib and meloxicam.

What are the side effects of glucosamine for dogs?

Published safety data for glucosamine in dogs is thin, but the effects that are reported are mostly mild and digestive. A 2017 review describes potential adverse effects as hypersensitivity and minor gastrointestinal effects such as flatulence and stool softening. Overdosing is the genuine danger: a 2015 case report describes a dog that ingested around 200 joint supplement tablets and developed multiorgan failure. Keep them out of reach and treat them like drugs, as Cornell advises.

How long does glucosamine take to work in dogs?

Nobody can promise a date, and any product that does is selling you something rather than telling you the evidence. Veterinary guidance is to judge a joint supplement over at least two months of daily feeding before deciding whether it is doing anything, and to record a baseline before you start so that you have something to compare against.

What can I give my dog to help their joints naturally?

The most reliable things are not products. Natural joint support for dogs usually means a food or a supplement rather than a veterinary treatment, so it is worth being clear about which one you are actually doing. Keep the dog at a healthy weight, keep them moving with regular short walks on good footing, feed a complete food that declares its joint ingredients, and give them somewhere comfortable to lie down. For a dog in genuine discomfort the honest answer is that nothing called natural replaces veterinary pain relief, and delaying that is the most common mistake owners make.

Is glucosamine safe for dogs with kidney problems?

This needs a veterinary answer rather than a general one, and the honest position is that the evidence is thin. The 2017 review notes that chondroitin sulphate is often stabilised with sodium or potassium chloride, which may be undesirable in older dogs with renal decline, and the case literature includes acute kidney injury after joint supplement overdosing. If your dog has kidney disease, ask your vet first and give them the exact product.

Can dogs take glucosamine every day?

Yes, provided the product is designed for daily feeding and you follow its directions, which most glucosamine and chondroitin products are. Two things to remember. Daily use only makes sense alongside a food that does not already supply the same ingredients, and supplements should be kept out of reach, because Cornell's advice is to treat them like drugs rather than like sweets.

What are the disadvantages of glucosamine for dogs?

The disadvantages are practical rather than dramatic. It is a daily cost for a dog that may not benefit, some dogs dislike the taste or leave it in the bowl, the evidence for pain relief is weak, the money may be better spent on weight management and a better food, and keeping up two or three separate supplements a day is a routine that owners abandon. There is little sense in stacking a glucosamine supplement on top of a food that already declares glucosamine.

Is glucosamine still recommended for dogs?

For pain relief, the weight of published evidence says no, and if you read one source it should be the 2022 systematic review and meta-analysis, which concluded that chondroitin-glucosamine products should no longer be recommended for pain management in canine osteoarthritis. For slowing the progression of joint disease the picture is less clear: some veterinary nutritionists still use it, on the grounds that it carries little risk and may help. Those are two different claims, and product packaging routinely blurs them together.

What is the short version?

Work down the list. Weigh the dog, and get the weight down if it is over. Change the exercise to suit the dog rather than cutting it out. Move the food to something that declares its joint-support ingredients, and if it already does, leave it there. Add a daily supplement only if the dog is showing signs and the first three are in place. And if the dog is limping or in pain, that comes before all of the above.

Curious whether a senior and joint-support combination is right for your dog? Tell us their breed, age and current issue and we will suggest a starting point. If you would rather start with the food side, our joint and health collection has the full range.

Where can I read the research behind this guide?

Everything cited in this guide is listed below, with the finding it was used for. The evidence base is peer-reviewed veterinary literature first, then veterinary guidance from established institutions. Manufacturer pages were used only for product composition and for the manufacturers' own stated claims, which are attributed as such.

• Barbeau-Grégoire R, et al. (2022). A 2022 systematic review and meta-analysis of enriched therapeutic diets and nutraceuticals in canine and feline osteoarthritis. International Journal of Molecular Sciences 23(18):10384. PMC9499673. Used for the glucosamine and chondroitin finding (88.9 per cent non-effect, 0 per cent effect, should no longer be recommended for pain management), the omega-3 finding, the collagen finding and the statement that MSM was not evaluated.
• Vandeweerd JM, et al. (2012). Systematic review of efficacy of nutraceuticals to alleviate clinical signs of osteoarthritis. Journal of Veterinary Internal Medicine 26(3):448–456. PMID 22404506. Used for the finding that the strength of evidence was low for every nutraceutical except omega-3 fatty acids in dogs.
• Aragon CL, Hofmeister EH, Budsberg SC (2007). Systematic review of clinical trials of treatments for osteoarthritis in dogs. Journal of the American Veterinary Medical Association 230(4):514–521. PMID 17302547. Used for the rating of the individual treatments, including the extremely low level of comfort for hyaluronan.
• Sanderson RO, et al. (2009). Systematic review of the management of canine osteoarthritis. The Veterinary Record 164(14):418–424. PMID 19346540. Used for the strong evidence for carprofen, firocoxib and meloxicam, and the moderate evidence for a green-lipped mussel functional food.
• Bhathal A, et al. (2017). Glucosamine and chondroitin use in canines for osteoarthritis: a review. Open Veterinary Journal 7(1):6–49. PMC5356289. Used for the very weak clinical trial evidence, the two to six week observation, the adverse effects, the salt forms and the renal caution.
• McCarthy G, et al. (2007). Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis. The Veterinary Journal 174(1):54–61. PMID 16647870. Used for the 35-dog trial that found benefit, and for the finding that the improvement at day 70 was not significantly different from the carprofen group.
• Moreau M, et al. (2003). Clinical evaluation of a nutraceutical, carprofen and meloxicam for the treatment of dogs with osteoarthritis. The Veterinary Record 152(11):323–329. PMID 12665145. Used for the 71-dog comparison in which ground reaction force improved with carprofen and meloxicam but not with the nutraceutical.
• Kampa N, et al. (2024). Evaluation of the comparative efficacy of green lipped mussel plus krill oil extracts (EAB-277), Biota orientalis extracts or NSAIDs for the treatment of dogs with osteoarthritis associated pain: a blinded, placebo-controlled study. Frontiers in Veterinary Science 11:1464549. doi:10.3389/fvets.2024.1464549. Used for the finding that meloxicam and EAB-277 beat placebo while 4CYTE did not.
• Hielm-Björkman A, et al. (2011). Evaluating complementary therapies for canine osteoarthritis, Part I: green-lipped mussel (Perna canaliculus). Evidence-Based Complementary and Alternative Medicine 6(3):365–373. PMC2722199. Used for the 45-dog randomised trial against carprofen and placebo.
• Rialland P, et al. (2013). Effect of a diet enriched with green-lipped mussel on pain behaviour and functioning in dogs with clinical osteoarthritis. Canadian Journal of Veterinary Research 77(1):66–74. PMC3525174. Used for the finding that the control diet contributed to reduced symptoms, amplified by the green-lipped mussel diet.
• Corbee RJ (2022). The efficacy of a nutritional supplement containing green-lipped mussel, curcumin and blackcurrant leaf extract in dogs and cats with osteoarthritis. Veterinary Medicine and Science 8(3):1025–1035. PMC9122405. Used for the finding that the dogs improved against baseline but did not differ from placebo.
• Nobles IJ, Khan S (2015). Multiorgan dysfunction syndrome secondary to joint supplement overdosage in a dog. Canadian Veterinary Journal 56(4):361–364. PMC4357907. Used for the overdose case report.
• Dobenecker B, Beetz Y, Kienzle E (2002). A placebo-controlled double-blind study on the effect of nutraceuticals (chondroitin sulfate and mussel extract) in dogs with joint diseases as perceived by their owners. The Journal of Nutrition 132(6 Suppl 2):1690S–1691S. PMID 12042495. Used for the placebo-response finding.
• Pye C, Clark N, Bruniges N, Peffers M, Comerford E (2024). Current evidence for non-pharmaceutical, non-surgical treatments of canine osteoarthritis. Journal of Small Animal Practice 65(1):3–23. PMID 37776028. Used for the wider management picture, including weight management, therapeutic exercise and hydrotherapy.
• MSD Veterinary Manual. Osteoarthritis in dogs and cats. msdvetmanual.com. Used for NSAIDs as the most predictably effective treatment, EPA at 50 to 100 mg/kg every 24 hours, and weight optimisation as the primary preventive method.
• Cornell University Riney Canine Health Center. How joint supplements can help orthopedic conditions. vet.cornell.edu. Used for the omega-3 quotations, the dose reference, the NASC recommendation and treating supplements like drugs.
• Shmalberg J (2014). Surveying supplements. Today's Veterinary Practice, May/June 2014. T1405C08.pdf. Used for the reference doses, the two-month observation, the placebo-perception finding and the limited evidence for MSM.
• Dogs Trust. Looking after an older dog. dogstrust.org.uk. Used for the age bands, life expectancy, twice-yearly check-ups and the lifestyle advice.
• UK Pet Food. Meeting the needs for your dog's stage of life. ukpetfood.org. Used for the decline in organ function from about seven years old.
• RSPCA. Dog health and welfare. rspca.org.uk. Used for behaviour change as an early sign of illness or pain.