The best joint supplement for cats
A cat joint supplement is a general wellbeing product intended to support mobility and comfort, most often built around glucosamine, chondroitin or green-lipped mussel extract. It is not a treatment for arthritis or any diagnosed joint condition — if your cat has actually slowed down or seems stiff, that needs a vet's assessment first, with a supplement considered alongside whatever they recommend rather than instead of it.
What the common ingredients are for
Glucosamine and chondroitin are naturally occurring compounds found in healthy cartilage, and supplements containing them are generally intended to support the cartilage a joint already has rather than repair damage that has already happened. They are widely used across cat and dog joint products and are usually well tolerated.
Green-lipped mussel extract is a newer addition to many joint supplements, valued for a naturally occurring blend of fatty acids and other compounds thought to support general joint comfort. As with glucosamine and chondroitin, it is a general wellbeing ingredient rather than a treatment for a diagnosed condition.
Reading the label properly
Check the format suits your cat — powders mixed into food, chews, and liquid drops are all common, and which one works best often comes down to how fussy your particular cat is about changes to their food or routine.
Look for a product that states it is suitable for cats specifically, since dosing and formulation can differ from dog products even when the active ingredients are similar. Follow the amount stated on the packaging for your cat's weight rather than estimating.
When a supplement is not the answer
A cat that has genuinely slowed down, is reluctant to jump, seems stiff after resting, or is grooming less than usual could be showing signs of joint pain that needs a vet's assessment, not a supplement bought and tried at home. Cats are notoriously good at hiding pain, so a change that seems small can reflect something more significant.
If your vet diagnoses a joint condition, they may recommend a supplement as part of a wider plan alongside other treatment — that is a very different thing from choosing one off a shelf and hoping it helps an undiagnosed problem. Weight management often comes into that wider plan too, since extra weight puts additional strain on joints that are already struggling, so your vet may look at your cat's overall body condition rather than the joints alone.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Whiskas 7+ Senior Cat Complete Dry with Chicken
Complete chicken dry food for senior cats aged 7+ in a 1.9KG bag
£12.39
Forthglade Soft Bite Grain Free Joints & Bones Treats
Grain-free salmon dog treats with salmon oil, glucosamine and chondroitin
£2.45
Pooch & Mutt Salmon Oil
Scottish salmon oil for dogs, dosed by weight from toy breeds to giants
£13.99
Burns Adult/Senior Cat Sensitive Grain Free Duck & Potato
Grain-free duck and potato food for cats with digestive or food sensitivities
£16.49
Pooch & Mutt Beef Collagen Chews
Beef collagen chews for dogs, aimed at skin, coat and joint support
£5.99
James Wellbeloved Senior Dry Cat Food Fish
A single-source fish dry food for senior cats, with glucosamine and chondroitin for joints
£21.79
James Wellbeloved Senior Dry Cat Food Chicken
A single-source chicken dry food for senior cats, with taurine and glucosamine in the mix
£21.79
James Wellbeloved Senior Dry Cat Food Turkey
A single-source turkey dry food for senior cats, formulated with added joint-care ingredients
From£21.79
Lily's Kitchen Lily S Kitchen Dog Lovely Lamb
Complete lamb-led dry dog food offered in two practical bag sizes
From£25.15
Purina One Senior 7+ Chicken 2.8kg
Senior cat dry food (7+), chicken recipe, in a smaller 2.8kg bag
£19.29
Whiskas 7 Poultry Feasts Senior Wet Cat Food Pouches in Jelly
Whiskas complete senior wet cat food with Chicken, Turkey, Poultry and Duck
From£5.35
Harringtons Cat Senior Chicken
Complete dry food for cats over 7, built around freshly prepared chicken
£9.89
Common questions
- Do joint supplements actually help cats?
- Ingredients like glucosamine, chondroitin and green-lipped mussel are widely used and generally well tolerated, and many owners and vets consider them a useful part of supporting general joint comfort. They are not a proven cure for an existing condition, and a diagnosed problem needs a vet's assessment first.
- At what age should I start giving my cat a joint supplement?
- There is no fixed age — some owners start with older cats as a general wellbeing measure, while others wait until a vet identifies a specific need. Ask your vet if you are considering starting one, especially for a cat with any existing health condition.
- How do I know if my cat has joint pain?
- Watch for reluctance to jump, stiffness after resting, reduced grooming, or general slowing down. Cats hide pain well, so these subtle changes are worth a vet visit rather than assuming it is just age.
- Can I give my cat a dog joint supplement instead?
- It is better to use a product formulated and dosed specifically for cats. Even where the active ingredients overlap, the correct amount for a cat can differ from a dog product, so check the label carefully or ask your vet.
Related
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.