Question: what is the difference between free range and marine collagen peptides?
Answer: Collagen is a protein that's found in the connective tissues. ... The main difference between Vital Proteins Collagen Peptides and Vital Proteins Marine Collagen is sourcing. While Collagen Peptides are sourced from grass-fed, pasture-raised bovine from Brazil, the Marine Collagen is sourced from wild-caught fish scales.