About 1 1/2 years ago, we started giving our dog (White German Shepherd) a few drops of Conquer HA in his food daily after it was recommended by a friend who headed the K9 dept. at our county's sheriff's office (they give it to all their K9s).
It has definitely made a difference in his ability to get around. Although he has no hip dyspepsia, he is now 10 1/2 and it is common in dogs his age. He still goes on a couple mile long walks every day with me. Although a little winded, he still climbs stairs and sometimes runs after squirrels or birds without issue.
I feel Hyaluronic Acid (HA) has worked so well I started taking 200 mg (in pill form) daily for my own knee pain about 3-4 months ago. It has DEFINITELY made a difference. I can go on 6-9 mile hikes every day in the Colorado mtns and wake up with no swelling or pain.
I swear by this product for our dog and tell every one I can about it.