By Riad · Reviewed by Fin&IV
Four joint supplements cover most UK dogs. Seraquin is the cheapest per day for a 20kg dog. YuMOVE is the green-lipped mussel pick. Flexadin Advanced is one chew a day for any size. Synoquin EFA adds omega-3 from krill.
Joint supplements support normal joint function. They don’t treat arthritis or replace anything your vet prescribes. If your dog is limping, stiff or slow to get up, see your vet first.
Quick picks
| Pick | Product | Why |
|---|---|---|
| Lowest daily cost | Seraquin for dogs over 10kg | 500mg glucosamine, 380mg chondroitin and 50mg turmeric per tablet |
| Green-lipped mussel | YuMOVE Joint Care | 250mg glucosamine plus 150mg green-lipped mussel and hoki per tablet |
| One a day, any size | Flexadin Advanced | One chew daily from day one, whatever the dog’s size |
| Omega-3 from krill | Synoquin EFA | Glucosamine and chondroitin with krill oil, zinc and vitamin C |
Side by side
Costs are for a 20kg dog, worked out from each label’s feeding guide and the retailer price shown. Prices checked 3 October 2026.
| Product | Main actives per tablet or chew | Daily amount, 20kg dog | Pack and price | Per day, maintenance | Per day, first weeks |
|---|---|---|---|---|---|
| Seraquin, over 10kg | Glucosamine HCl 500mg, chondroitin 380mg, turmeric extract 50mg | 2 tablets for 4 to 6 weeks, then 1 | 60 tablets, £21.53 | 36p | 72p |
| Synoquin EFA, 10 to 25kg | Glucosamine HCl, chondroitin, krill oil, vitamin C, zinc [mg per tablet from pack] | 3 tablets for 6 weeks, then 1 | 120 tablets, £60.85 | 51p | £1.52 |
| YuMOVE Joint Care | Glucosamine HCl 250mg, green-lipped mussel and hoki 150mg, hyaluronic acid 1.4mg | 4 tablets for the first month, then 2 | 80 tablets, £22.00 (Boots) | 55p | £1.10 |
| Flexadin Advanced | UC-II collagen, boswellia, fish and flaxseed oil, vitamin E | 1 chew from day one | 30 chews, £32.99 | £1.10 | £1.10 |
The four, one by one
Seraquin: lowest daily cost
Made by Boehringer Ingelheim. Each 2g chewable tablet has 500mg glucosamine HCl, 380mg chondroitin sulphate and 50mg turmeric extract. Dogs of 10 to 20kg start on 2 tablets a day for 4 to 6 weeks, then drop by half a tablet a week to 1.
Best for: owners who want glucosamine and chondroitin at the lowest running cost.
What we like
- Most glucosamine and chondroitin per pound of the four
- Dose halves after the starting period
- Chew it or crumble it into food
Watch out for
- Tapering week by week takes some tracking
- No omega-3 or green-lipped mussel
YuMOVE Joint Care: green-lipped mussel pick
Made by Lintbells. Each tablet has 250mg glucosamine HCl, 150mg ActivEase (green-lipped mussel and hoki), 1.4mg hyaluronic acid and 3mg manganese sulphate. A 16 to 30kg dog has 4 tablets a day for the first month, then 2.
Best for: owners who want green-lipped mussel in the mix.
What we like
- Easy to find at Boots, supermarkets and pet shops
- 6-week money-back guarantee from Lintbells
- Clear feeding guide in four weight bands
Watch out for
- Half the glucosamine per tablet of Seraquin, so more tablets a day
- First month costs double
Flexadin Advanced: one a day, any size
Made by Vetoquinol. Built around undenatured type II collagen (UC-II), with boswellia, fish and flaxseed oil and vitamin E. One chew a day from the start, whatever the dog’s size. For dogs over 2 years old.
Best for: big dogs, and owners who want one chew and no loading phase.
What we like
- Same dose for a 10kg or a 50kg dog, so big dogs cost no more
- No loading phase
- Soft chew, given as a treat
Watch out for
- Highest daily cost for small and medium dogs
- Not glucosamine-based, so harder to compare like for like
Synoquin EFA: omega-3 from krill
Made by VetPlus, a UK company. Combines glucosamine HCl and chondroitin with Dexahan krill oil, vitamin C and zinc. Sold in breed-size versions. A 10 to 25kg dog has 3 tablets a day for 6 weeks, then 1.
Best for: owners who want joint actives and omega-3 in one tablet.
What we like
- Omega-3 from krill in the same tablet
- One tablet a day at maintenance
- Sized versions for small, medium and large dogs
Watch out for
- Six-week loading phase at 3 tablets a day
- Mostly sold through vets and vet pharmacies
How to choose
Compare per day, not per pack
Packs run from 30 to 120 tablets and doses change with weight. Divide the price by the tablets, then multiply by your dog’s daily amount from the label.
Budget for the starting dose
Most glucosamine products double up for the first 4 to 6 weeks. That first month costs more.
Read the actives
Glucosamine and chondroitin are the most common pairing. Green-lipped mussel, krill oil, turmeric and UC-II collagen are what set brands apart.
Think about size
For dogs over 30kg, a fixed one-a-day chew can work out cheaper than tablets dosed by weight.
Give it time
Manufacturers set starting periods of 4 to 6 weeks. Judge a product after that, not after a week.
Speak to your vet before starting a supplement if your dog takes prescribed medicine for joint pain.
FAQs
What is the best joint supplement for dogs in the UK?
It depends on what you want in it and your dog’s size. Seraquin has the lowest daily cost for a 20kg dog. YuMOVE adds green-lipped mussel. Flexadin Advanced is one chew a day for any size.
How long do joint supplements take to work?
Manufacturers set a starting period of 4 to 6 weeks at a higher dose. Give it that long before judging.
Is YuMOVE or Seraquin better?
Seraquin has twice the glucosamine per tablet (500mg against 250mg) plus 380mg chondroitin, and costs less per day at maintenance. YuMOVE has green-lipped mussel and hyaluronic acid, which Seraquin doesn’t.
Can I give my dog a joint supplement with pain relief from the vet?
Ask your vet first. They know what your dog is already taking.
Do joint supplements treat arthritis?
No. They’re complementary feeds that support normal joint function. Arthritis needs a vet’s diagnosis and treatment plan.
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