COLOPHON // SOURCES

KLOW peptide references and sources

Every quantitative claim on this site maps to a numbered study below. The blend has none of its own; these are the component literatures it draws on.

How to read this list

There is no citation for the four-peptide KLOW blend, because no controlled study of the blend exists. Every reference below is a study of a single component — KPV, GHK-Cu, BPC-157 or thymosin beta-4/TB-500 — and that is exactly the point: the blend's evidence is the sum of separate parts, never a test of the whole. The full numbered list, with DOIs and PubMed identifiers, follows on this page.

  1. 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.
  2. 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.
  3. Hsieh MJ, et al. Therapeutic potential of pro-angiogenic BPC157 is associated with VEGFR2 activation and up-regulation. J Mol Med (Berl). 2017;95:323-333.
  4. Malinda KM, et al. Thymosin beta4 accelerates wound healing. J Invest Dermatol. 1999;113(3):364-368.
  5. Editorial note grounded in the KLOW corpus: no controlled in-vivo or human study has tested the four-peptide KLOW blend against monotherapy, any subset, or placebo; all combination claims are mechanistic extrapolations from the single-component literature. See the per-component references herein.
  6. 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.
  7. Kannengiesser K, Maaser C, Heidemann J, et al. Melanocortin-derived tripeptide KPV has anti-inflammatory potential in murine models of inflammatory bowel disease. Inflamm Bowel Dis. 2008;14(3):324-331.
  8. 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;21:976-983.
  9. 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.
  10. Lee E, Burgess K. Safety of Intravenous Infusion of BPC157 in Humans: A Pilot Study. Altern Ther Health Med. 2025;31(5):20-24.
  11. Ruff D, et al. A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin β4 in healthy volunteers. Ann N Y Acad Sci. 2010;1194:223-229.
  12. Mendias CL, Awan TM. Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance. Sports Med. 2026.
  13. 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.
  14. 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.
  15. 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.
  16. Sun Q, et al. PepT1-targeted nanodrug based on co-assembly of anti-inflammatory peptide and immunosuppressant for combination treatment of acute and chronic DSS-induced colitis. Front Pharmacol. 2024;15:1442876.
  17. Mao S, Huang J, Li J, et al. Exploring the beneficial effects of GHK-Cu on an experimental model of colitis and the underlying mechanisms. Front Pharmacol. 2025;16:1551843.
  18. Chang CH, et al. Pentadecapeptide BPC 157 enhances the growth hormone receptor expression in tendon fibroblasts. Molecules. 2014;19:19066-19077.
  19. Irobi E, et al. Structural basis of actin sequestration by thymosin-beta4: implications for WH2 proteins. EMBO J. 2004;23(18):3599-3608.
  20. Bock-Marquette I, et al. Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair. Nature. 2004;432(7016):466-472.
  21. Sikiric P, et al. Protective effects of pentadecapeptide BPC 157 on gastric ulcer in rats. World J Gastroenterol. 2004;10:1032-1037.
  22. Morris DC, et al. A dose-response study of thymosin β4 for the treatment of acute stroke. J Neurol Sci. 2014;345(1-2):61-67.