glucosamine/chondroitin and omega-3 (fish oil)... you can get liguid glucosamine for animals (It's been used for about 30 years in animals) --- and it does help -- also exercise to strengthen the muscles to help support the joints - my Orthopedic jokes that it's been proven in animals to work. You will have to research to find the correct amounts (google it) - but from my POV - the combo is great (arthritis is arthritis no matter people or dogs)