GHK-Cu vs RGD Peptide
Research Verdict
RGD Peptide is the stronger research reference for the stated comparison criteria. GHK-Cu: Level B, positive small human RCTs for skin.
Quick Answers
Which is better, GHK-Cu or RGD Peptide?
RGD Peptide is the stronger research reference for the stated comparison criteria. GHK-Cu: Level B, positive small human RCTs for skin.
What is the key difference between GHK-Cu and RGD Peptide?
GHK-Cu promotes tissue repair via copper-dependent matrix remodeling; RGD peptides target integrin-mediated anti-angiogenesis for cancer therapy - entirely different mechanisms, indications, and development trajectories.
Evidence Comparison
GHK-Cu: Level B, positive small human RCTs for skin. RGD peptide/cilengitide: Phase 3 CENTRIC trial in glioblastoma (Stupp 2014, Lancet Oncol, n=545) was negative - no survival benefit. Both have human data, but GHK-Cu data is positive while cilengitide failed its primary endpoint.
Evidence Context Favoring GHK-Cu
Skin repair and collagen synthesis research with proven human efficacy.
Evidence Context Favoring RGD Peptide
Integrin biology or anti-angiogenesis mechanism research - but cilengitide failed clinically, so efficacy expectations should be calibrated.
Side-by-Side Snapshot
| Evidence grade | GHK-Cu: Level B RGD Peptide: Level C |
|---|---|
| Research status | GHK-Cu: Phase 2 RGD Peptide: Preclinical |
| Primary category | GHK-Cu: Skin & Beauty RGD Peptide: Anti-Aging & Longevity |
| Cited studies | GHK-Cu: 6 RGD Peptide: 3 |