Marine Collagen | Naticol® Bioactive Collagen Peptides from Wild Atlantic Cod from Osavi is a dietary supplement containing Naticol® bioactive collagen peptides, a carefully formulated and clinically tested type I collagen derived from wild Atlantic cod. Collagen is primarily a structural protein and has different functions, structures, and locations depending on its type. Type I collagen is characterized by its high biocompatibility with human tissue. It is one of the most common types of protein, accounting for up to 90% of the human body. It is found in the skin, bones, subcutaneous tissue of tendons, and many other areas.