Cat Joint Supplement - Antinol® Joint Care Pro
Antinol® Joint Care Pro is a concentrated cat joint supplement built around PCSO-524® - a proprietary green-lipped mussel oil extract delivering over 90 naturally occurring fatty acids, including a full spectrum of omega-3s. Rapidly absorbed, 100% natural, and backed by over 25 years of scientific research, it supports your cat’s joint health, mobility and coat condition as part of their daily nutritional routine. Recommended by vets for long-term daily use.
Active Ingredients:
- 50mg PCSO-524 - Our active ingredient from Green-Lipped Mussel
Capsule:
- Olive Oil
- Plant-based Glycerin
- Bovine Gelatin
- D-Alpha Tocopherol (Vitamin E)
Storage instructions: Keep in a cool, dry place under 25 degrees Celsius
Analytical Constituents: Crude Protein (29.8%), Fat Content (53.3%), Crude Ash (<0.1%), Crude Fibre (0%)
Omega 3: 50mg PCSO-524 contains 20mg Omega 3 (including 10mg EPA and 5mg DHA)
How subscriptions work
Products are automatically delivered on your schedule. No obligation, modify or cancel your subscription anytime.
First-time customers
New to Antinol®️? Our starter pack offer makes your first purchase easy!
- Free Booster Pack
- Free delivery
- 60-day risk-free trial
How much Antinol®️ does my cat need?
If your cat is new to Antinol®, it's really important that you double the capsules for the first 15 days to give your cat the best start possible.
Cats
All sizes
2 capsules daily
1 capsule daily
How long a pack of Antinol lasts for your cat
Cats take one capsule a day at maintenance, whatever their size. For the first 15 days the amount is doubled, which is why a first pack lasts less time than an ongoing one.
What to look for in a cat joint supplement
Cats are not small dogs, and a joint supplement that suits a dog will not necessarily suit a cat. Four things are worth checking before you choose.
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1
How it is given
Cats can be particular about anything new in their bowl. A soft gel capsule that can be pierced and the oil mixed into food gives you a way in when a tablet or a powder will not work. Antinol capsules can be pierced, and there is a short video on this page showing how.
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2
How much your cat needs each day
A supplement that requires several capsules a day is harder to keep up. Antinol is one capsule a day at maintenance, for cats of all sizes, with the amount doubled for the first 15 days.
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3
Where the omega-3 comes from
The breadth of the fatty acid profile matters as much as the headline omega-3 figure. Antinol uses PCSO-524, a green-lipped mussel oil delivering over 90 naturally occurring fatty acids per capsule, including 20mg of omega-3 of which 10mg is EPA and 5mg is DHA.
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4
Whether it suits long-term daily feeding
Joint support is a routine, not a course. Antinol is 100 per cent natural, contains five ingredients in total, and is suitable for long-term daily feeding in healthy cats.
You should always speak to your vet if you notice a change in the way your cat moves or behaves.
Signs Your Cat Could Benefit from a Joint Supplement
Cats are naturally reserved when it comes to showing when they're feeling vulnerable. Unlike dogs, who may vocalise or show visible changes in the way they move, cats tend to quietly adapt their behaviour. Subtle shifts in their daily routine are often the first observable signs that their joints may benefit from additional nutritional support.
The following behavioural changes may suggest your cat’s joints would benefit from a nutritional supplement:
- Reluctance to jump up onto furniture or surfaces they previously accessed with ease
- Difficulty grooming the lower back, base of the tail or hindquarters
- Reduced activity, or less interest in play and exploration than usual
- Changes in litter tray posture or frequency of use
These observations are not a cause for alarm on their own. Always speak to your vet if you notice any changes in your cat’s movement or behaviour.
Why Cat Joint Supplement Matter
Joints are central to everything your cat does: jumping, stretching, climbing, and simply moving through their day. Yet feline joint health remains one of the most overlooked areas of cat nutrition, largely because cats are instinctively skilled at masking when they need help, often continuing their routines long after their joints would benefit from additional nutritional support. Research published in veterinary literature suggests that joint stiffness may be present in a significant proportion of cats over seven years of age, frequently without any outward signs. This is why proactive nutritional support is increasingly discussed among veterinary professionals as part of a broader approach to long-term feline wellness.
Certain cats may benefit from earlier or more consistent nutritional support: indoor cats with limited opportunity for natural movement, older cats entering their senior years, larger breeds such as Maine Coons and Ragdolls who carry greater body weight across their joints, and cats with increased nutritional needs at any life stage. A daily cat joint supplement can form a meaningful part of their nutritional routine, contributing to mobility and ease of movement over the long term.
What makes us different?
Natural
potent + proprietary concentrated formula
Top rated
7,000+ 5 star reviews
15-18
green-lipped mussels in each capsule
Sustainable
sourcing + farming from NZ
What is Antinol?
Antinol®️ is a super potent, Green-Lipped Mussel extract that is processed at our world-class extraction facility within 2 hours of harvesting, ensuring it retains its active goodness.
The mussels are stabilised and freeze-dried, before undergoing our unique proprietary supercritical fluid extraction technique. This technology is solvent and heat-free, protecting the active ingredients to ensure the highest quality oils are packed into Antinol®️.
We contain no mussel powder. Mussel powder is a waste product of our production process. Our proprietary extraction process concentrates the fatty acids in the capsule and means that the capsule has 20 times more fatty acids than the freeze-dried mussel powder.
What sets PCSO-524® apart from other omega-3 sources, including standard fish oil, is the breadth of its fatty acid profile. Each capsule delivers over 90 naturally occurring fatty acids, including rare types such as ETA (eicosatetraenoic acid) and OTA (octadecatetraenoic acid) that are not found in conventional fish oil supplements. This full-spectrum lipid complex is preserved intact through the solvent-free, heat-free supercritical CO₂ extraction process, ensuring every capsule delivers consistent, high-quality nutritional supportfor your cat’s joints.
Ingredients in our cat joint supplement
50mg Active ingredient
(extracted from Green Lipped Mussel)
Beef Gelatin
D-Alpha Tocopherol
(Vitamin E)
Olive Oil
Glycerin
And nothing else!
If you would like to view the full list of ingredients click here
Why buy from us?
60-day risk-free trial
Free delivery on orders over £50
5% off all Subscribe + Save plans
Trustpilot reviews
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AL
Ann Lee
Antinol has made a great difference to the life of my girl.
Antinol has made a great difference to the life of my girl.
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E-
Excellent - Tanya
We have found Antinol to be an excellent joint supplement.
We have found Antinol to be an excellent joint supplement.
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VG
Very good service - Uma
I can’t thank enough for your service
I can’t thank enough for your service
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TY
Thank you - Shirley
Always delivered on time as a regular 3 monthly order thanky... more
Always delivered on time as a regular 3 monthly order thankyou
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NG
No going back to anything else! - Greta
Antinol is by far a superior and healthier option. Thanks to... more
Antinol is by far a superior and healthier option. Thanks to a friend who recommended it
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DC
David Cuthbertson
It's a fantastic product!
It's a fantastic product!
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MW
Money well spent - J Rees
As its says on the guide it does take some time for them t... more
As its says on the guide it does take some time for them to kick in, be patient, it takes a while to build up in the body!
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VH
Very Happy - Sue
I have a Jack Russell terrier and a Leonberger on antinol ... more
I have a Jack Russell terrier and a Leonberger on antinol and they are doing great on them
FAQ's
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I have more than one cat. Can they share a pack?
Each cat takes one capsule a day at maintenance, so a pack lasts proportionally less time when it is shared. If your cats are new to Antinol, each of them needs the doubled amount for their own first 15 days.
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Is Antinol suitable for cats of any age?
Antinol Joint Care Pro is 100 per cent natural and suitable for long-term daily feeding in healthy cats. Speak to your vet if you have any concerns about your cat's health.
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How long does a pack of Antinol last for my cat?
At one capsule a day, a 60 capsule pack lasts 60 days and a 90 capsule pack lasts 90 days. If your cat is new to Antinol the amount is doubled for the first 15 days, so a first 60 capsule pack lasts around 45 days and a first 90 capsule pack around 75 days.
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What is the 60-day risk-free trial?
We offer a 60-day risk-free trial to all new Antinol customers with our Money Back Guarantee*. Simply purchase one of our Starter Packs and complete the 60 days as directed (with double capsules for the first 15 days). If at the end of the 60 days you don’t see the results you hoped for, let us know and we will refund your order in full.
*Money Back Guarantee is valid for up to 90 days from the date of purchase of the Starter Pack.
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Why do I need to double the capsules for the first 15 days?
If your cat is new to Antinol®, it’s really important that you double the capsules for the first 15 days. This gets them off to the best start possible.
For the first 15 days:
2 capsules dailyAfter 15 days:
1 capsule daily -
How long does it take to see a difference from a cat joint supplement?
Most pet parents see results after 15 to 30 days, but it is different for every pet. This may vary depending on the individual situation of your cat or dog, so we recommend that you continue to give Antinol® and monitor your pet for 60 days.
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When should I feed my pet Antinol®?
It’s up to you – with their main meal or as a treat. When giving twice as many capsules in the first 15 days, you can split them throughout the day, or safely feed them all in one go.
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Can I use Antinol® with any other supplements?
Antinol® has no known side effects or unfavourable interactions with any other medications or supplements, although we would not recommend giving other Omega-3 or marine oils at the same time. Clinical studies have shown that Antinol® is best used as part of a multi-modal osteoarthritis management plan and can be given daily alongside medications such as non-steroidal anti-inflammatories (NSAIDs) as a long-term nutritional supplement.
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Can Antinol® be fed with prescription-only medicines?
Antinol® has no known side effects or unfavourable interactions with any other medications or supplements, although we would not recommend giving other Omega-3 or marine oils at the same time. Clinical studies have shown that Antinol® is best used as part of a multi-modal osteoarthritis management plan and it can be given daily alongside medications such as non-steroidal anti-inflammatories (NSAIDs) as a long-term nutritional supplement.
For further guidance, always speak to your vet first.