Formulated as a convenient way to add essential nutrients and collagen to your diet, Solaray Collagen Bone Complete contains types 1 & 3 marine collagen sourced from wild-caught deep-sea fish as well as calcium, magnesium, and 70 naturally occurring trace minerals from seaweed. We also include vitamin D-3 to help support healthy bone growth, vitamin C to help support healthy collagen production, and vitamin K-2 to help support healthy calcium absorption