Well I'm not a vet, but I am a vet tech. I know the doctors at the clinic I work at recomend to give human glucosamine supplenments to patients all the time (that usually have joint issues). You could also find a good dog food that have Glucosamine in it. Glucosamine is glucosamine. It is a supplement and is not dog/human specigic. Glucosamine with Chondroitin works well too.
The standard amount of glucosamine and chondroitin that should be given to your dog is 20mg's per pound of weight, so in the case of your 20lb dog the amount of glucosamine and chondroitin would be 500mg's. You should try getting a supplement that also contains a natural anti-inflammatory such as MSM alongside glucosamine and chondroitin to help ease the pain and swelling that so often occurs with joint pain in dogs.
This would be a good question for your veterinarian, as the answer will depend upon your dog's health status. However, there is very little evidence that glucosamine does anything for your dog's joint health.
Considering that glucosomine does not work anyway why not?
If Niall from One Direction was to give the gift of a dog to someone, He would get one from a shelter. He would also give the person the type of dog they might want.
Amazing dogs can take a lot of the same medications and supplements that humans can, not all but some. For stiff joints both people and animals need glucosamine. Glucosamine is also given to older horses to help with stiff joints. Talk to your veterinarian about specific dosages for your dog.
I would suggest none - there is no evidence that glucosamine has any positive effects for your dog's health and it may interfere with other medications he may be taking. It tends to be expensive, and in the United States at least there is no control over the concentration, potency or efficacy of nutritional supplements.
Maybe they don't have enough money to give the dog shots or feed it food. Maybe they really want to keep it but it just isn't working out. There are many reasons for people to give up their dog, as sad as it may seem.
It depends on the weight of the dog. I'd suggest that you check with a vet. Prednisone, when not used correctly can harm the dog. It is a great drug, but it can also be a dangerous one without professional guidance.
It matters how much, they may become a little sick or very sick
Why would you even want to give that to your dog? Do NOT give it to your dog. If you think your dog is ill or possibly has diabetes, take your dog to your Veterinarian for a check up.
I have recently stummble upon a product that is much better than SynoviCare, it is made by Effective Natural Pets it is a vegetable source glucosamine that combines other things such as Chondroitin and MSM and some herbs that help with the over all health of the joint. The one thing I really like about this product is that because the glucosamine is not derived from shellfish you don't have to worry about any allergy interactions. I called the company and they were wery friendly and helpful. I was blown away when they told me they guarantee their products to work or your money back. I have seen great results on my dog and the product doesn't have to be refrigerated so that was another plus. When compare to SynoviCare on price the Effective Natural Pets Glucosamine Plus was much less. They also have a comparison chart on their website and a few other products not only for dogs but horses and cats as well. I hope this helps and this proves you don't have to pay a lot for a quality product. Nutri Vet has a whole line of glucosamine products ranging from chewables, treats, and even liquids you can add on there food or in there water. I believe theres a product called Cosiquine that is also good. Nutri-Vet and Cosiquine are good Glucosamine supplements and also a product made by VPS known as SynovialMax soft chews are really good. They are treats that you give to your dog every day depending on the weight. My dogs love them and i have seen an improvement from just the last couple of weeks.