Collagen peptides

Also known as hydrolysed collagen, collagen, collagen hydrolysate, colagen.

Last reviewed October 9, 2026 · Jump to references

What is Collagen peptides?

In plain words

Collagen peptides are small pieces of collagen, a protein that helps give skin, cartilage, and bones their structure. The body breaks them down further and absorbs the pieces, which do not go directly to a particular joint or patch of skin. Researchers study them for skin moisture and elasticity, joint discomfort, and bone health. Some studies suggest modest benefits, but results vary and many trials have industry funding.

Technical definition

Collagen peptides are mixtures of short amino-acid chains produced by enzymatic hydrolysis of collagen, a glycine-, proline-, and hydroxyproline-rich structural protein typically sourced from animal connective tissues. Digestion yields amino acids and some small peptides that enter circulation; they have no single established molecular receptor, although certain collagen-derived peptides show effects on connective-tissue cell signaling in experimental models. They are marketed as food ingredients and dietary supplements, not as approved medicines for treating disease.

Educational information only. This page does not provide medical advice or determine whether a supplement is appropriate for you. Review supplements with a qualified healthcare professional, especially if you take medication, are pregnant, have surgery scheduled, or have a chronic medical condition.

Evidence by use

Each use is rated on its own. There is no single overall effectiveness score.