Marine Collagen Peptides

Various (Supplement)

Marine collagen peptides are hydrolyzed collagen sourced from fish skin, scales, or bones rather than bovine hides. The typical molecular weight of marine hydrolysate is slightly lower than bovine (1-3 kDa vs 3-5 kDa), and some studies suggest faster absorption kinetics — though head-to-head outcome comparisons in skin or joint endpoints are limited. Marine collagen is primarily Type I collagen, which dominates human skin. It appeals to consumers avoiding bovine sources for dietary, religious, or sustainability reasons. Quality varies substantially by source; wild-caught fish skin is preferred for contaminant profile over farmed sources. Clinical evidence on skin parameters is broadly interchangeable with bovine collagen peptides at comparable doses. Cost is typically 20-40% higher.