Collagen peptides

hydrolyzed peptides, bovine or marine

Hydrolyzed protein from skin and bone. The trials are numerous and positive, and nearly every one of them is funded by a peptide manufacturer — the funding column is the reason the grades stop where they do.

last reviewed 2026-08-30

by draft — unverified

GRADE

CLAIM

SPECIES

EFFECT

STUDIES

skin elasticity & hydration — grade B, small effect (human-rct)

Proksch et al. (2014)

species humandesign RCT, double-blindn 69duration 8 weeksdose 2.5 or 5 g/dayfunding industryoutcome skin elasticity measurements

Measurable elasticity improvement, replicated in later manufacturer-funded trials. Consistent enough for B; independent replication would settle it.

activity-related joint pain — grade C, small effect (human-rct)

Grade timeline

No grade movement since first review.

Dosing & safety

TYPICAL SUPPLEMENT DOSE2.5–15 g/day

DOSES USED IN STUDIES2.5–15 g/day

UPPER LIMITnone established

COST SNAPSHOT

No product records for this compound yet.

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