I LOVE THIS PRODUCT! IT'S ONE OF THOSE PRODUCTS THAT I HAVE RECOMMENDED TO COUNTLESS KEESHOND OWNERS FOR ARTHRITIS. AND IT WORKS! I LOVE GETTING THAT FEEDBACK. HELPING ANOTHER DOG IN THEIR SENIOR YEARS MAKE ME HAPPY. I LOVE THE SENIOR DOG AND THEY DESERVE A LONG AND QUALITY LIFE PAIN FREE. YOU CAN CHOOSE THE GREEN LIPID MUSSEL ADDITION HERE OR IN THE COMPANION PRODUCT JOINT MOBILITY. I RECOMMEND ADDING THIS PRODUCT IN WITH THE JOINT MOBILITY FOR ADDED BENEFITS TO YOUR DOGS JOINT HEALTH.