Royal Canin Joint Health Supplement Adult Soft Chews are designed to support your dog's joint comfort and promote healthy aging. Developed by veterinarians, these supplements are specially formulated with a science-driven blend of ingredients and designed to help support your dog's health from the inside out. They include green-lipped mussel to help reduce occasional stiffness while EPA and DHA, Omega-3 fatty acids, help support joint function and reduce inflammation from normal exercise and activity. They also feature vitamins C and E to help support healthy aging. Be sure to follow the on-pack feeding guidelines and give your dog no more than the recommended number of pieces per day.