I have had my dog on Duralactin for a year now and before starting this product she could not navigate the hardwood floor stairway in our home. She is a 77 pound mixed breed and this has really improved her quality of life. She is on a prescription arthritis medicine, a pain control prescription medicine and Duralactin. Between all three of these, she is doing fine and no longer has issues with the stairs, or jumping up on the sofa. I would definitely recommend this product if your furry friend is showing signs of arthritis!