is Labrador Retriever and Golden Retriever the same? because they look alike, just one has longer fur..

my dog has HD...

I took him to vet since afew months ago, lucky that he is still in early stage not serious yet so the vet advice me to give him pills. But till today, I just opened the 3rd bottle of pills, and his leg is still the same.

my dog stays indoor, and I have marble floor....

What else can I do beside giving pills?

owners with HD dog, anything you guys do to help your dog? or just give pills only?