Biologically speaking, a collagen peptide is essentially a highly efficient delivery vehicle for specific amino acids.
When you ingest these short peptide chains, they don’t just get broken down entirely into single amino acids in the gut. Because of their unique structure (heavy in hydroxyproline, proline, and glycine), many of these di-peptides and tri-peptides cross the intestinal barrier intact. Once in the bloodstream, they act as signaling molecules to trigger our body’s own fibroblasts to produce new collagen.
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