Collagen peptides are enzymatically cleaved fragments of collagen that are easily digestible and efficiently absorbed by the body.

Precise classification:

• Origin: Collagen (usually from bovine, porcine, or fish sources)
• Processing: Enzymatic hydrolysis → short peptide chains (primarily di- and tripeptides like Pro-Hyp)
• Properties: Water-soluble, tasteless, heat-stable
• Distinction:Collagen = native structural protein, poorly digestibleGelatin = thermally denatured collagenCollagen peptides = further broken-down gelatin, highest bioavailability

Function in the body:

• Provide specific amino acids (primarily glycine, proline, hydroxyproline)
• Some peptides act as bioactive agents: They serve as signaling molecules and can stimulate collagen synthesis in the skin, tendons, and cartilage
• Not a complete protein (lacks essential amino acids) → not a substitute for protein sources

Areas of application (evidence-based):

• Skin elasticity & wrinkle reduction (moderately supported)
• Joints/tendons (useful depending on load)
• Bone density (supportive, not therapeutic)

Critical point:
Collagen peptides do not "incorporate themselves directly." They act indirectly via amino acids and signal peptides.