I know Mordy is the specialist here... but I just know what has worked on my dogs....
Missing Link Joint Plus Formula, 500 mg of vit. c, a cap. of 3 omega fish oil and good kibble.
I am sure Mordy can put more input into this, but I gave my boxer, who had arthritis, Missing Link and the above and within a week, HE NEVER LIMPED AGAIN. Now, again, this was just my dog, not saying it will work on every dog.
But it can't hurt to try. Again, I believe Mordy is the specialist here on this type of subject.
Amy