Peptide comparison
Both come up in discussions about tissue regeneration, but they are very different molecules. GHK-Cu is a natural tripeptide that carries copper and is studied mainly in skin and tissue remodelling; BPC-157 is a synthetic 15-amino-acid peptide studied in animal models of tendon, ligament and gut injury.
Compare mechanism, class, receptors and evidence. All compounds are offered with ≥99% purity verified by HPLC and a batch COA.
| GHK-Cu | BPC-157 | |
|---|---|---|
| Type | Copper-bound tripeptide (Gly-His-Lys:Cu²⁺) | Synthetic pentadecapeptide |
| Origin | Naturally present in plasma, saliva and urine | Partial sequence of a gastric juice protein |
| Research context | Skin, collagen, wound healing, gene expression | Tendon, ligament, muscle, gastrointestinal mucosa |
| Described mechanisms | Copper transport, collagen stimulation and remodelling | Angiogenesis (VEGFR2), nitric oxide, cell migration |
| Most studied route | Topical (cosmetic) and cell cultures | Systemic and oral in rodents |
| Maturity of the evidence | Widespread cosmetic use; small topical clinical studies | Mostly preclinical |
GHK-Cu is an endogenous molecule: the tripeptide glycyl-histidyl-lysine forms a complex with copper, and its plasma levels fall with age. Most of its research focuses on the skin (collagen and elastin synthesis, wound healing, remodelling), and it is the only one of the two with widespread topical cosmetic use. Gene expression studies link it to changes in many genes, an interesting finding that comes mainly from computational analyses.
BPC-157 does not exist as such in the body: it is a synthetic 15-amino-acid sequence derived from a gastric protein. Its evidence is mostly preclinical, in rodent models of tendon, ligament, muscle and gut injury, with proposed mechanisms linked to angiogenesis and nitric oxide. Because of their different profiles, they are often studied together, as in the GLOW and KLOW blends, rather than as alternatives.
💡 Want the complete scientific foundations? See the Peptide guide or the Certification in Peptide Science.
No. GHK-Cu is a copper tripeptide studied mainly in skin and tissue remodelling; BPC-157 is a synthetic peptide studied in animal models of tendon, ligament and gut injury. Their described mechanisms are different.
GHK-Cu, because of its topical cosmetic use and some small clinical studies in skin. The evidence for BPC-157 is mainly preclinical.
Because they are studied through complementary pathways within tissue repair. The GLOW and KLOW blends combine GHK-Cu, BPC-157 and TB-500 (and KPV in the case of KLOW).
Purity ≥99% verificada por HPLC and batch COA.
View full catalog →