The main signs a dog's joints are ageing are hesitation before stairs or jumping, stiffness after resting that eases once they're moving, and a slower pace on the daily walk. A sudden limp is different and needs a vet, not a supplement. For the gradual signs, glucosamine, chondroitin, and boswellia have shown measurable benefit in clinical trials, usually after six to twelve weeks of daily use.

Joint change in dogs rarely arrives as a single dramatic moment. It shows up as small edits to a routine you know by heart: a pause before the stairs that wasn't there last year, a walk that used to take twenty minutes now taking twenty-five. Owners often don't clock it until they compare notes with an old video.

Hesitation at stairs or getting up

If your dog used to take the stairs two at a time and now stops to consider them, or takes a run-up to jump into the car, that's usually the joints, not the confidence. Cartilage naturally thins with age and use, and the resulting friction makes weight-bearing movements like climbing and jumping the first to feel uncomfortable, well before a limp is visible on flat ground.

Stiffness after rest

A dog who's stiff getting up from a nap but moves normally ten minutes later is showing a classic early sign of joint change. The stiffness comes from inflammation and reduced synovial fluid settling during rest; movement warms the joint back up and temporarily masks the problem. It's easy to write off as "just being sleepy," especially in a dog who still runs fine once warmed up.

Slowing down on the morning walk

If the walk that used to be a fixed twenty minutes has crept toward twenty-five or thirty, with more sniffing stops and less pulling on the lead, that's often the dog pacing themselves rather than losing interest in the walk itself. Compare this to a genuinely uninterested dog, who tends to want to turn back early rather than just move more slowly.

Limping or favouring a leg

This one is different from the others and deserves its own line: a sudden limp, especially one that appears after exercise or seems to come on quickly, is not something to wait out or manage at home. It can mean anything from a minor strain to a cruciate injury, and it needs a vet, not a supplement. Chronic, gradual favouring of one side that's been present for months is a different picture, and worth mentioning at a routine check-up rather than an emergency one.

What actually helps

For the gradual, age-related signs above, the strongest evidence points to a small set of ingredients used consistently over weeks, not days. If you're not sure whether what you're seeing is gradual or something more acute, the two-minute assessment can help you tell the difference.

Glucosamine and chondroitin sulfate together have the longest track record: a randomised, double-blind trial found meaningful improvement in dogs with osteoarthritis over 70 days (McCarthy et al., 2007). Boswellia serrata, taken alongside physiotherapy, showed measurable mobility gains in a more recent double-blind, placebo-controlled study in dogs (Stabile et al., 2024). Curcumin, the active compound in turmeric, reduced inflammatory markers in a 2025 systematic review and meta-analysis, though that trial was in human osteoarthritis patients rather than dogs (Hsueh et al., 2025); it also needs piperine (black pepper extract) alongside it to be properly absorbed, a pharmacokinetic effect shown in both animals and humans (Shoba et al., 1998).

None of this works overnight. Most of the trials behind these ingredients ran for six to twelve weeks before showing a measurable difference, which is roughly the timeline to expect from a daily joint supplement in practice too. Broono's Move chew combines glucosamine, chondroitin, MSM, boswellia, turmeric, and ginger at doses matched to the research above, as a daily addition rather than a response to an already-acute problem.

The earlier this kind of support starts relative to when the stiffness first appears, the more of the dog's comfortable, active years it has a chance to protect.

References

McCarthy, G., O'Donovan, J., Jones, B., McAllister, H., Seed, M. and Mooney, C. (2007) 'Randomised double-blind, positive-controlled trial to assess the efficacy of glucosamine/chondroitin sulfate for the treatment of dogs with osteoarthritis', The Veterinary Journal, 174(1), pp. 54-61. https://www.sciencedirect.com/science/article/abs/pii/S1090023306000900

Stabile, M., Fracassi, L., Lacitignola, L., Garcia-Pedraza, E., Girelli, C.R., Calculli, C., D'Uggento, A.M., Ribecco, N., Crovace, A., Fanizzi, F.P. and Staffieri, F. (2024) 'Effects of a feed supplement, containing undenatured type II collagen (UC II®) and Boswellia Serrata, in the management of mild/moderate mobility disorders in dogs: A randomized, double-blind, placebo controlled, cross-over study', PLOS ONE, 19(10), e0305697. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0305697

Hsueh, H.-C., Ho, G.-R., Tzeng, S.I., Liang, K.-H. and Horng, Y.-S. (2025) 'Effects of curcumin on serum inflammatory biomarkers in patients with knee osteoarthritis: a systematic review and meta-analysis of randomized controlled trials', BMC Complementary Medicine and Therapies, 25, 237. https://bmccomplementmedtherapies.biomedcentral.com/articles/10.1186/s12906-025-04951-6

Shoba, G., Joy, D., Joseph, T., Majeed, M., Rajendran, R. and Srinivas, P.S.S.R. (1998) 'Influence of piperine on the pharmacokinetics of curcumin in animals and human volunteers', Planta Medica, 64(4), pp. 353-356. https://pubmed.ncbi.nlm.nih.gov/9619120/