PrometheusGeneral

Osteoarthritis: what the evidence supports and Collagen Peptides

Each entry’s own grades, side by side. A grade says how strong the evidence is for one outcome — it does not rank one entry over the other.

Outcome map

Osteoarthritis: what the evidence supports

5 graded interventions for osteoarthritis, ranked by strength of evidence.

Grade B5 graded outcomesrevised Jul 10, 2026

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

Compound or practice

Collagen Peptides

Real, if modest, evidence for tendon, joint, and skin outcomes when taken with vitamin C before loading — better than its hype suggested a decade ago.

Grade B3 graded outcomesrevised Jul 10, 2026

A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.

Swap the two

Graded in both

Outcomes are matched by name. Two entries can describe the same outcome in different words, so one listed further down may still be graded in the other.

No outcome has the same name in both entries. They may still overlap under different wording — read the two lists below.

Graded only in Osteoarthritis: what the evidence supports

  • Curcumin (Turmeric) Unclear effectEvidence grade B
  • Collagen Peptides Unclear effectEvidence grade B
  • Boswellia Unclear effectEvidence grade B
  • Glucosamine Unclear effectEvidence grade C
  • Hyaluronic Acid (Oral) Unclear effectEvidence grade C

Graded only in Collagen Peptides

  • Joint pain / osteoarthritis Small effectEvidence grade B
  • Tendon / ligament Small effectEvidence grade C
  • Skin elasticity Small effectEvidence grade B

Conditions

Only in Osteoarthritis: what the evidence supports

None.

Only in Collagen Peptides

What each entry says about the other

  • Osteoarthritis: what the evidence supports’s entry · Goes with: Grade B

Both columns are read from the entries as they stand in this library. A comparison is not advice to take either one, and it is no substitute for a clinician who knows the person.