BPC-157 vs Copper tripeptide-1
A peptide sold to heal tendons, muscles and the gut. It has been tested mostly in rats, and the only human report covers 12 patients. A skin-care ingredient sold to firm skin, soften wrinkles and regrow hair. The one controlled human trial, of 13 patients, found no skin benefit.
Both sit at grade C: animal and cell studies. BPC-157: Not approved. Copper tripeptide-1: Cosmetic ingredient.
Evidence
CAnimal and cell studies
CAnimal and cell studies
Human studies cited
Animal or cell studies cited
Why the grade
A 2025 systematic review found 36 studies of BPC-157 for musculoskeletal injury: 35 preclinical, almost all in rats from one Zagreb research group, and one retrospective human series of 12 patients with knee pain. No randomized or controlled human trial has been published, so the healing claims rest on animal data (grade C). A second review, searching to June 2026, found nothing new.
For the skin anti-ageing use, the controlled human evidence is a single randomized trial of 13 patients after CO2 laser resurfacing, which found no objective difference in redness or wrinkles. The rest is gene-expression work in cultured cells, animal wound and lung-injury models, and cosmetic-company studies summarized in reviews written by the peptide's discoverer.
FDA
Not approved
BPC-157 is not approved by the FDA for any use and is sold as a research chemical. On 28 October 2026 HHS issued an enforcement discretion policy. Under it, HHS will not act against state-licensed pharmacies and physicians that compound BPC-157 acetate for a named patient, by injection, by mouth or on the skin, if they meet sourcing, testing, labeling and reporting conditions. The policy is not an approval and does not add BPC-157 to the 503A bulks list. It lasts until a final rule settles that question.
Cosmetic ingredient
Copper tripeptide-1 is a cosmetic ingredient and sits outside FDA drug approval; no copper tripeptide-1 or GHK-Cu product is approved by the FDA as a drug for any use. Injectable GHK-Cu sold online is not approved and is sold as a research chemical.
Sold for
BPC-157 is sold as a healing peptide for tendons, ligaments, muscle and gut, taken by injection or orally, and is one of the most popular compounds in the grey-market peptide trade.
Copper tripeptide-1 is marketed in serums as a collagen-building, wound-healing peptide that firms skin, softens wrinkles and regrows hair.
Studies say
Dozens of rat studies, nearly all from one laboratory, show faster tendon, ligament and gut healing, but the only human data are a 12-patient uncontrolled series, so nothing is established in people (grade C).
Cell and animal studies show it switches on repair genes and speeds wound closure, but the one blinded human trial found no measurable skin benefit over the control regimen, so the evidence is C.
Class
Synthetic pentadecapeptide (gastric-derived)
Carrier/copper peptide
Route
Several routes
Topical