Dolfos ArthroFos, 90 tablets is a feed supplement from the Polish maker Dolfos for healthy joint function and joint regeneration in dogs. Each tablet contains glucosamine sulphate (300 mg) and chondroitin sulphate (250 mg), plus vitamin C (25 mg), manganese and copper. The maker especially recommends ArthroFos for young large-breed dogs during rapid growth and for older dogs. The dose is 1 tablet per 20 kg of body weight a day.
What it is and who makes it
Dolfos is a Polish company producing veterinary supplements for dogs and cats. ArthroFos is a classic chondroprotector: glucosamine and chondroitin are natural components of joint cartilage and synovial fluid. It's used preventively during growth and ageing, and as support during joint treatment alongside therapy prescribed by a vet.
Ingredients
Glucosamine sulphate 300 mg, chondroitin sulphate 250 mg, dried brewer's yeast, maltodextrin, minerals and magnesium stearate. Each tablet also contains vitamin C 25 mg, manganese 1.15 mg, copper 1 mg and magnesium 1 mg.
| Component | Per tablet |
|---|---|
| Glucosamine sulphate | 300 mg |
| Chondroitin sulphate | 250 mg |
| Vitamin C | 25 mg |
| Manganese | 1.15 mg |
| Copper / magnesium | 1 mg / 1 mg |
| Dose | 1 tablet per 20 kg daily |
Pros
- The classic pair. Glucosamine and chondroitin in one tablet.
- Vitamin C. Involved in cartilage collagen synthesis.
- Manganese and copper. Support cartilage renewal.
- Simple dosing. One tablet per 20 kg a day.
- Economical. 90 tablets last a 20 kg dog 3 months.
Cons and what to keep in mind
- Not a painkiller. The effect builds over weeks and won't relieve acute pain.
- Not a treatment on its own. If your dog limps, get a vet diagnosis first.
- Big dogs need several tablets. A pack lasts a 40 kg dog 45 days.
- Dogs only. Cats need a different supplement.
How to give it
1 tablet per 20 kg of body weight a day. Give it whole, crumble it into food or hide it in a treat. Chondroprotectors work as courses, and first changes usually show after 4–8 weeks, so don't judge results earlier. Agree on course length and breaks with your vet, especially if the dog already takes anti-inflammatory drugs.
Which dogs need joint support
Large and giant breed puppies that grow and gain weight quickly. Older dogs with morning stiffness or reluctance to jump into the car or climb stairs. Active and working dogs under heavy loads. Overweight dogs, for whom losing weight comes first, since every extra kilogram loads the joints. More in senior dog nutrition and care and overweight cats and dogs.
What else helps joints
A healthy weight, regular moderate walks instead of rare exhausting ones, non-slip floors, an orthopaedic bed and a ramp to the car or sofa. For large-breed puppies: the right growth food without excess calcium, and limited jumping and stairs until growth ends. How to choose food for a big dog is covered in food for large-breed dogs.
Who it suits
Growing large-breed puppies, older dogs, active dogs and dogs with mobility problems, preventively or alongside treatment. Similar supplements: Artrolik and Candioli Confis Ultra. Other supplements are in vitamins and mineral supplements.
Verdict
Dolfos ArthroFos is a simple, straightforward chondroprotector with glucosamine, chondroitin, vitamin C, manganese and copper at one tablet per 20 kg. A good choice for course-based joint support in large-breed puppies and older dogs.
Signs of joint problems
The dog takes longer to get up after sleeping, warms up slowly at the start of a walk, limps after exercise, is reluctant to jump or climb stairs, lags behind on walks, or licks or chews at a joint. In large-breed puppies, watch for an uneven gait, loose joints and pain when touched. These signs mean a vet visit, because dysplasia, arthritis, ligament injuries and other causes are treated differently. A chondroprotector is a useful part of support, not a replacement for diagnosis, X-rays and prescribed therapy.
Frequently Asked Questions
How many ArthroFos tablets should I give?
1 tablet per 20 kg of body weight a day.
What does it contain?
Glucosamine 300 mg, chondroitin 250 mg, vitamin C, manganese and copper.
When will I see results?
Usually after 4–8 weeks of use.
Can puppies take it?
Yes, the maker recommends it for growing large-breed puppies.
Can cats take it?
No, it's a dog supplement.
How long does a pack last?
90 days for a 20 kg dog.



