Helps maintain cartilage, tendons and ligaments Supports joint integrity, movement and flexibility Works with body’s immune system to promote healthy joints and improve mobility Get dietary support for healthy, flexible joints with Swanson Ultra Chicken Sternum Cartilage Collagen Type II. As the primary structural protein in the body’s connective tissues, collagen plays a vital role in the maintenance of the cartilage, tendons and ligaments that keep joints functioning properly. Our Chicken Collagen provides a solid nutritional foundation for joint preservation.