The problem: arthritis in older dogs
About 20% of adult dogs and 70-80% of dogs over 8 have some degree of osteoarthritis. Large and giant breeds are most affected, but small dogs with luxating patella or hip dysplasia suffer too.
Supplements with real evidence
1. Omega-3 (EPA + DHA) — strongest evidence
Wild fish oil (sardine, salmon, anchovy) or krill. Proven reduction of joint inflammation.
- Dose: 50-100 mg combined EPA+DHA/kg/day.
- UK monthly cost (25 kg dog): £15-30.
- Response time: 4-6 weeks.
- Watch for oxidation — refrigerate.
2. Glucosamine + chondroitin — mixed evidence
The classics. Variable results across studies — some dogs respond well, others not. Worth a 6-8 week trial.
- Dose: glucosamine 22-25 mg/kg + chondroitin 10-15 mg/kg daily.
- UK monthly cost: £20-50.
- Correctly dosed brands: Cosequin, Dasuquin, Synoquin EFA, YuMOVE Advance.
3. Green-lipped mussel
New Zealand mussel — combines natural glycosaminoglycans with omega-3. Solid evidence.
- Dose: 15-30 mg/kg/day.
4. UC-II (undenatured collagen type II)
Has the best collagen-supplement evidence. Pricier but effective.
- Dose: 10-40 mg/day depending on size.
- UK cost: £25-50/month.
5. Turmeric (curcumin)
Growing evidence as a natural anti-inflammatory. Better bioavailability with piperine or lecithin.
What doesn't work
- Generic green-lipped mussel without clear dosing.
- Collagen type I (skin collagen, not joint).
- "Joint blend" supplements without declared amounts.
Prescription options when supplements aren't enough
- Carprofen, Meloxicam: classic NSAIDs. Effective; liver and kidney monitoring needed.
- Galliprant: more selective NSAID, fewer GI/renal effects.
- Cartrophen injections: weekly course of 4, then maintenance.
- Librela (bedinvetmab): monthly anti-NGF injection. Now widely available in UK practices. £55-90 per dose.
Most effective approach: combination
- Maintain ideal weight — every kilo off the joints helps.
- Omega-3 at correct dose.
- Glucosamine + chondroitin 6-8 week trial.
- Adapted exercise: many short walks beat fewer long ones.
- Prescription NSAID if pain persists, under vet supervision.
How CanAI helps
Log lameness, stiffness and pain in CanAI with photo/video — patterns visible across weeks. Ask the AI chat about supplement choices for your dog's breed, weight and arthritis stage. UK insurance with chronic cover matters for seniors — Librela + NSAIDs + checks can hit £80-150/month long-term.
