Beau gets this, ever since he had his cruciate rupture, they said it will help him from developing Arthritis, hes on Arthriaid Omega with glucosamine chondroitin, its made by nutriscience I buy it on line 1 ltr bottle last us a good 7 months.
Alfie has it. I think it's one of those things that you never really know if it's doing anything or not!
I think it's a good precautionary idea for large breed or older dogs - ithe supplements generally work out quite cheap so nothing really to loose.
A few years ago Bryn had a couple of times when his one back leg was making him limp. Lasted a couple of days. We took him to the vet the second time it happened and he recommended glucosamine - but said there is no reliable scientific evidence that it works but he knew of several dogs for which it seemed to work - and the dog owners swore by it. I think barley hits the nail on the head in the comments above! (Bryn has Vet-Vits glucosamine & chondroitin - and has no problems with any legs! He's just too fast, though; wouldn't mind if he was a bit slower!)
What does chondroitin do? Just noticing it is also included in the riaflex and cosequin that caz has put links to
My highly technical and scientific understanding is that chondroitin is something that isn't much use on it's own, but works well when coupled together with glucosamine, almost like they boost one another. Or something along those lines anyway. Told you it as technical
I think most, if not all, joint supplements will have both.
You could give the occasional tin of sardines to help with Omega 3.
Yes I do give my dogs fish raw. I give things like sprats or sardines from the fish counter in supermarket (after a suitable period of freezing to kill any possible parasites). They get fish is small amounts probably about twice a week.
Oily fish is generally seen as a good source of omega 3 (sardines, sprats, mackerel, herring .........) However there are lots of other sources many from plant sources such as chia seeds and flaxseed oil. I have not tried either of these so can not comment how much they might help. Plant source Omega 3 tends to have to be converted in the body (human or dog) to a more usable form.
You could consider omega 3 capsules or a fish body oil. I have done both in the past but the capsules did not suit my dogs and you have to be careful with storage with regard to the bottles of oil. Light and oxygen affect the oil.
Though not a replacement for the joint supplement mine occasionally get a trachea or a foot to also help the joints. Connective tissue and cartridge naturally contain glucosamine and chondroitin.
Edit: I have always bought my joint supplements online / in shop, never done via vets on prescription.
Edit: My basic understanding (which is probably incorrect) is that Glucosamine provides the chemicals / building blocks for the joint to repair itself. Chondroitin helps by boosting the process of formation of cartridge and helps to prevent the joint degrading further. It also helps with joint lubrication.