I started giving this K9 Glucosamine by Liquid Health to my 13 year old Red Fox Lab. I went through the whole bottle and honestly did not notice any difference in seeing her get around or notice any different in her joints. She hated the taste and it was a chore just to try to get her to take it. Really wasn't a fan of having to give it to her 2 times a day either. She would run away everytime I tried to give it to her, so having to chase her around the house 2 times was inconvenient. Also doesn't come with a measuring utensil.
We started giving this to our 14 1/2 year old Great Pyr. Within days the difference was noticeable. She runs out of the back door to bark at the birds like she used to. We have started giving it to our 4 year old Bouvier/Pyr cross just as a supplement. Really great product.