Undenatured type II collagen is the main structural protein of cartilage, responsible for its tensile strength and hardness. UC-II, derived from chicken sternum cartilage, is a patented form of undenatured type II collagen (native). It contains important nutrients such as calcium and collagen that are involved in important processes of the body. Recommended to take one capsule up to three times a day. Dietary supplements do not replace a balanced and varied diet. Store out of reach of children. Consult your doctor if you want to use dietary supplements and are being treated for a disease, or if you are pregnant or breastfeeding.