I work for a vet and we have treated many dogs with Adequan injections. Most dogs respond extremely well to it. Owners have told us that their dogs quality of life is greatly improved. I have seen for myself the great improvement in mobility in almost all the dogs that have be treated with the Adequan. I will tell you however that it is not 100% percent effective but darn well is close to it. Keep us posted on how your dog does on the injections.