Collagen is the main structural protein in the extracellular matrix of a body’s various tissues. As the main component of connective tissue, it is the most abundant protein in mammals, constituting 25% to 35% of a mammalian body’s total protein content. Tropocollagen molecules are bound together to form a complex of elongated fibrils known as a collagen fiber. This protein is primarily found in connective tissues such as skin, bone, tendons, cartilage, and ligaments. Vitamin C is vital for collagen synthesis, and specific amino acids (such as glycine and proline) enhance its production.
Among animal-derived sources, fish (marine) collagen peptides are often favored for their superior absorption and bioavailability. Due to their smaller molecular weight compared to other animal collagens, they exhibit enhanced permeability and potent antioxidant properties. This high bioavailability is crucial, as it directly determines the therapeutic efficacy of the ingested nutrient.
Collagen