Clinic KLOW

Research digest · Sources

KLOW peptide: the references behind every claim

Every quantitative statement on this site traces to one of these published studies. Verify them yourself.

Back to the studiesThe four arms

How to use this list

Every numbered citation in the body copy of this site maps to one entry here, with a DOI or PubMed link so you can check the source. The studies are grouped, in your head, by arm — KPV, GHK-Cu, BPC-157 and TB-500/thymosin beta-4 — but the one thing to keep in front of you is the absence: there is no entry for the four-peptide KLOW blend itself, because no controlled blend study exists.

A few entries carry a caution worth repeating. The thymosin beta-4 studies describe the full-length native protein, not the short TB-500 fragment marketed as it. The AHK-Cu hair study tests an analog of GHK-Cu, not GHK-Cu itself. We cite both honestly as context, never as direct blend or component proof.

  1. Malinda KM, et al. Thymosin beta4 accelerates wound healing. J Invest Dermatol. 1999;113(3):364-368. ↗
  2. Staresinic M, et al. Gastric pentadecapeptide BPC 157 accelerates healing of transected rat Achilles tendon and in vitro stimulates tendocytes growth. J Orthop Res. 2003;21(6):976-983. ↗
  3. Dalmasso G, Charrier-Hisamuddin L, Nguyen HT, Yan Y, Sitaraman S, Merlin D. PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation. Gastroenterology. 2008;134(1):166-178. ↗
  4. Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Res Int. 2015;2015:648108. ↗
  5. Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018;19(7):1987. ↗
  6. Intra-Articular Injection of BPC 157 for Multiple Types of Knee Pain. Altern Ther Health Med. 2021. (retrospective case series, n=16). ↗
  7. Trachy RE, Fors TD, Pickart L, Uno H. The hair follicle-stimulating properties of peptide copper complexes. Results in C3H mice. Ann N Y Acad Sci. 1991;642:468-469. ↗
  8. Krivic A, et al. Achilles detachment in rat and stable gastric pentadecapeptide BPC 157: Promoted tendon-to-bone healing and opposed corticosteroid aggravation. J Orthop Res. 2006;24(5):982-989. ↗
  9. Pyo HK, Yoo HG, Won CH, Lee SH, Kang YJ, Eun HC, Cho KH, Kim KH. The effect of tripeptide-copper complex on human hair growth in vitro. Arch Pharm Res. 2007;30(7):834-839. (tests AHK-Cu, an analog of GHK-Cu). ↗
  10. Philp D, et al. Thymosin beta 4 induces hair growth via stem cell migration and differentiation. Ann N Y Acad Sci. 2007;1112:95-103. ↗
  11. Lee E, Burgess K. Safety of Intravenous Infusion of BPC157 in Humans: A Pilot Study. Altern Ther Health Med. 2025. ↗
  12. Mendias CL, Awan TM. Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance. Sports Med. 2026. ↗
  13. Mao S, Huang J, Li J, Sun F, Zhang Q, Cheng Q, Zeng W, Lei D, Wang S, Yao J. Exploring the beneficial effects of GHK-Cu on an experimental model of colitis and the underlying mechanisms. Front Pharmacol. 2025;16:1551843. ↗
  14. Sosne G, et al. Activation of pro-resolving pathways mediate the therapeutic effects of thymosin beta-4. Front Immunol. 2024;15:1458684. ↗
  15. Wang L, et al. Thymosin beta4 improves the survival of cutaneous flaps of rat and activates Wnt/beta-catenin signaling. Arch Med Sci. 2024. ↗
  16. Ruff D, et al. A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers. Ann N Y Acad Sci. 2010;1194:223-229. (full-length thymosin beta-4, not the TB-500 fragment). ↗
  17. Hsieh MJ, et al. Therapeutic potential of pro-angiogenic BPC157 is associated with VEGFR2 activation and up-regulation. J Mol Med (Berl). 2017;95(3):323-333. ↗
  18. Wang Y, et al. Pharmacokinetics, distribution, metabolism, and excretion of body-protective compound 157, a potential drug for treating various wounds, in rats and dogs. Front Pharmacol. 2022;13:1026182. ↗
  19. Hostynek JJ, Dreher F, Maibach HI. Human skin penetration of a copper tripeptide in vitro as a function of skin layer. Inflamm Res. 2011;60(1):79-86. ↗
  20. Getting SJ, Christian HC, Lam CW, et al. Dissection of the anti-inflammatory effect of the core and C-terminal (KPV) alpha-melanocyte-stimulating hormone peptides. J Pharmacol Exp Ther. 2003;306(2):631-637. ↗