Supplement reference
Collagen Peptides (Types I & III)
A sourced reference on Collagen Peptides (Types I & III) identity, evidence limits and safety context.
Source and review status
Published sources checked
Sources checked on: 6 September 2026
Qualified clinical review: Pending. This page has not been clinically reviewed.
About this source check
AI-assisted editorial source checking covers the cited material and its stated limits. It is not a systematic review, verification of a supplied product, or clinical sign-off.
Editorial role: InfoAddict. Last material change: 6 September 2026. Next source review: 6 March 2027.
What it is
Collagen peptides are hydrolysed proteins. Animal source, peptide profile and product formulation differ, even when a label names types I and III.
Sources: National Library of Medicine, PubMed
What the cited evidence shows
A 2023 meta-analysis of 26 randomised trials of hydrolysed collagen reported pooled skin-hydration and elasticity findings. It also identified bias in included studies and variation by source and duration. It does not establish joint, tendon or anti-ageing treatment for every collagen product.
Sources: National Library of Medicine, PubMed
Limits and safety context
This review concerns oral hydrolysed collagen and specific measured skin outcomes, not a personalised recommendation.
Sources: National Library of Medicine, PubMed
Published sources
- Effects of oral collagen for skin ageing: systematic review and meta-analysis
National Library of Medicine, PubMed. 2023; accessed 6 September 2026.
Supports: Twenty-six RCTs of hydrolysed collagen and skin hydration/elasticity; source, duration and bias varied.
Change history
| Date | Change | Clinical-review status |
|---|---|---|
| 6 September 2026 | Source-linked reference published | Pending |
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