The molecular weight of our fish collagen is ¡Ü1000da or ¡Ü3000da, which are easy to be absorbed by human body. 3. High purity and quality--- pony certification, halal certificate The protein content of our fish collagen powder is more than 99.8%. 4. Good taste, no smell, easily dissolved Our fish collagen peptide is similar to the color of white paper. The knowledge about collagen peptide: Collagen is a protein made up of amino acids that is found in the human body. It is the most common protein in humans and other mammals, making up 25% to 35% of the total protein content of your body.