Dorian Yates Nutritions Collagen Complex is a dietary supplement that contains collagen and combines with other ingredients for a greater overall effect on joints and connective tissue. Collagen is the most abundant protein in the body, with a thread-like structure ideal for connective tissue, binding bones and muscles. It is the main component of bones, skin, muscles, tendons and cartilage. DY Nutrition Collagen Complex includes: Vitamin C for normal collagen formation Vitamin B6 for energy production and inflammation reduction Hyaluronic acid to support natural levels in joints