Collagen: Sources and What Vegan Versions Are

Collagen is animal-derived by definition — extracted from bovine, porcine or fish tissue. There is no plant collagen: products marketed as vegan collagen are either precursor blends (vitamin C, amino acids) that support the body's own synthesis, or fermentation-produced engineered proteins, which are different ingredients with their own documentation. Conventional collagen places a product outside vegan and vegetarian claims.