Quick answer: many dogs with chronic kidney disease (CKD) also have stiff, sore joints, and a joint supplement can sometimes be part of their care, but only once your vet has agreed, because kidney disease changes what is safe to add. The things that matter most are phosphorus and protein (which renal diets carefully control), potassium and other salts, extra treats, and pain relief, since anti-inflammatory painkillers need great care in kidney patients. Omega-3 has the best evidence of the joint ingredients and is also suggested for dogs with CKD from IRIS stage 2. If you'd like something specific to discuss, take the label of MedPaw Hip & Joint Chews to your vet and ask whether it suits your dog.
Transparency note: this page is written by MedPaw, which makes a joint supplement. It is general information, not a diagnosis or treatment plan, and it doesn't replace your vet's advice. Sources are linked so you can check them. Checked 9 October 2026.
What matters when your dog has kidney disease
Healthy kidneys filter waste from the blood, keep minerals such as phosphorus and potassium in balance and hold on to water. In CKD that work slowly declines. Vets grade it from stage 1 to 4 using the International Renal Interest Society (IRIS) system, and the stage shapes the diet and medicines your vet recommends. Anything you add to the bowl, a joint chew included, becomes part of that plan.
What to check in a joint supplement for a dog with CKD
| What to check | Why it matters | What to ask your vet |
|---|---|---|
| Phosphorus | Controlling phosphorus is central to CKD care, through a renal diet and sometimes a phosphate binder | Does this chew fit within my dog's phosphorus plan? |
| Protein | Protein restriction is considered from stage 2 and recommended from stage 3 | Is a small daily chew OK alongside the renal diet? |
| Potassium and salts | Some glucosamine is supplied as a potassium or sodium salt, and VCA advises caution in pets that need a low-potassium diet | Do my dog's potassium results matter here? |
| Treats and calories | Every chew and pill wrapper counts towards a carefully balanced diet | How many extras a day can my dog have? |
| Omega-3 | Suggested from IRIS stage 2, and the joint ingredient with the best evidence | Should my dog have fish oil, and how do I count every source? |
| Medicines | Effects of glucosamine and chondroitin may last longer in dogs with kidney disease | Does anything need changing or monitoring? |
For guidance only. Your vet decides your dog's diet, targets and medicines.
The diet points come from AAHA's senior care guidelines, which state that "IRIS currently recommends phosphorus control with a reduction in intake and addition of binders", that protein restriction is "to be considered at IRIS stage 2 and recommended at IRIS stage 3", and that at stage 2 "the addition of long-chain omega-3 polyunsaturated fatty acids is suggested". The caution about low-potassium diets, and the note that glucosamine and chondroitin effects may last longer in pets with kidney disease, come from VCA Animal Hospitals.
Pain relief and kidney disease
Non-steroidal anti-inflammatory drugs (NSAIDs) such as meloxicam and carprofen are the usual first painkillers for arthritis, but the kidneys are one of the organs they can affect. Writing for vets, veterinary internal medicine specialist Dr Gregory Grauer advises that NSAIDs "should be avoided whenever possible" in dogs with pre-existing kidney disease, and that the more advanced the stage, the stronger the reason to avoid them. That is a decision for your vet, who will look at your dog's blood and urine results and may suggest other pain relief instead. Our guides to NSAIDs for dogs and blood tests for dogs on NSAIDs explain the monitoring.
A joint supplement is not a painkiller and won't replace pain relief your vet prescribes. Never start, stop or change a medicine yourself, and never give human painkillers.
When to see your vet
- Your dog is drinking or peeing more than usual (see why is my dog drinking so much water)
- Vomiting, a poor appetite, weight loss or unusual tiredness
- New or worsening lameness, or crying out when touched or getting up
- Pain that doesn't seem controlled on their current plan
- Any change after starting a new supplement, chew or food: stop it and call your vet
- Before adding any supplement at all, so your vet can check it against the renal plan
What helps stiff joints in a dog with kidney disease
The biggest wins for joints don't involve a tub at all:
- Lean body weight. Less weight means less load on sore joints. Agree any weight change with your vet, because kidney patients can lose muscle and condition. Our guide to weight and joint health explains why it matters.
- Little and often. Short, regular, steady walks keep joints moving and muscles working. See low-impact exercise for stiff dogs.
- Physio or hydrotherapy if your vet refers you: hydrotherapy for dogs explains what to expect.
- Grip and access. Rugs on slippery floors and a ramp for the car (see non-slip flooring).
- Fresh water always available, and a warm, supportive bed.
If your older dog is also losing muscle, our guide to supplements for a dog losing muscle covers what helps.
What the evidence says about joint supplement ingredients
Not every ingredient has the same backing. A 2022 review of 72 trials graded the options for dogs with arthritis:
How the main joint supplement ingredients compare on evidence for joint pain in dogs
| Ingredient | What the 2022 review of 72 trials found |
|---|---|
| Omega-3 (fish oil, green-lipped mussel) | The strongest evidence of the supplements reviewed |
| Glucosamine and chondroitin | Did not relieve pain |
| MSM, hyaluronic acid, Boswellia | Too few good trials to judge on their own |
Source: Barbeau-Grégoire et al., International Journal of Molecular Sciences, 2022.
For a dog with CKD this is useful, because omega-3 is the one ingredient that is both the best supported for joints and suggested in kidney guidance. Many renal diets already contain added omega-3, so tell your vet about every source. Our guide to omega-3 fish oil for dogs' joints explains the options.
MedPaw's label, to show your vet
We don't claim MedPaw is suitable for every dog with kidney disease, and it doesn't treat CKD or arthritis. Here is exactly what it contains so your vet can judge it against your dog's results:
MedPaw Hip & Joint Chews: the main amounts per chew on the label, to show your vet
| Ingredient or fact | Per chew, as published |
|---|---|
| MSM | 185mg |
| Glucosamine | 170mg |
| Chondroitin | 70mg |
| Green-lipped mussel | 70mg |
| Boswellia serrata | 30mg |
| Hyaluronic acid | Included (amount not published) |
| Vitamin C | 33mg |
| Vitamin E | 24 IU |
| Zinc | 3mg |
| Format | Soft chicken and bacon flavour chew, 60 per tub |
| Allergens | Mollusc (green-lipped mussel) and gluten (brewer's yeast) |
| What it is | A complementary feed, not a medicine or painkiller |
The full composition and analytical constituents are printed on the tub.
If your vet needs a figure that isn't on the label, such as phosphorus or sodium, email bark@medpaw.co.uk and we'll answer what we can. One small chew is also part of the day's treat allowance, so ask your vet to count it in.
Our recommendation: keep your vet's renal diet and pain plan first. If your vet is happy for your dog to have a joint chew, MedPaw puts glucosamine, chondroitin, MSM, green-lipped mussel, hyaluronic acid and Boswellia in one soft daily chew with a 60-day money-back guarantee. Show them the label above and ask whether MedPaw Hip & Joint Chews suits your dog. Feeding amounts by weight are on the product page.
Joint supplements and kidney disease: common questions
Can a dog with kidney disease have glucosamine?
Sometimes, with your vet's agreement. VCA advises caution in pets that need a low-potassium diet and notes its effects may last longer in pets with kidney disease. Your vet will weigh it against your dog's stage and blood results.
Is fish oil good for dogs with kidney disease?
Long-chain omega-3, mainly from fish oil, is suggested for dogs with CKD from IRIS stage 2 in AAHA's senior care guidelines, and it is also the joint ingredient with the best evidence. Many renal diets already contain it, so ask your vet how much your dog should have in total.
Can dogs with kidney disease take anti-inflammatory painkillers?
NSAIDs need great care in kidney disease, and specialists advise avoiding them where possible. Your vet will decide based on your dog's results and may suggest other pain relief. Never give human painkillers or change a dose yourself.
Do joint chews contain phosphorus?
Most chews contain some, as most foods do. Check the label's composition and analytical constituents with your vet, and ask the manufacturer for any figure your vet needs that isn't listed.
Should I stop my dog's joint supplement if they're diagnosed with CKD?
Ask your vet at the diagnosis appointment. Take the tub with you so they can decide whether it fits the new diet and treatment plan.
