Formulated using hydrolysed pure marine collagen (Type II), Natures Aid Collagen Joint Formula combines a number of carefully selected nutrients ideal for those with an active lifestyle or for extra support later in life. The product also contains:?Vitamin D3 and Zinc to help maintain normal bones? Copper and Manganese which help in the maintenance of normal connective tissue? Vitamin C which supports normal collagen formation, for the normal function of cartilage.