Proteins & peptides
Collagen Peptides
Names you may see: hydrolyzed collagen collagen hydrolysate marine bovine collagen
The quick take
Collagen peptides are fragments of collagen protein, usually derived from animal sources.
A closer look
What forms will I see on a label?
Hydrolyzed collagen may come from bovine, porcine or marine sources. Undenatured type II collagen is a different preparation; its research and amounts are not interchangeable.
Why people use it
People choose collagen for skin appearance, joint comfort and connective-tissue support. These goals differ from using a complete protein for muscle-building nutrition.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Some trials report joint-symptom benefits. Skin findings are less certain when study quality and funding are considered. Results depend on the preparation and outcome studied.
What should I know before using it?
Check the animal source for allergies and dietary suitability, especially fish-derived products. Ongoing joint pain needs assessment, rather than assuming a supplement will address its cause.
Sources & further reading
Review of collagen and skin outcomes (PubMed) ↗
Review of collagen and joint outcomes (PubMed) ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.