Klow is a proprietary four-peptide research blend containing GHK-Cu (50mg), KPV (10mg), BPC-157 (10mg), and TB-500 (10mg) in a single lyophilized vial totaling 80mg. Each component has been individually studied in preclinical research — GHK-Cu for its copper-binding antioxidant properties, KPV as an anti-inflammatory tripeptide, BPC-157 for cytoprotective effects, and TB-500 for actin regulation.

Preclinical: tissue repair/wound healing (Molecules 2025 MDPI; Pharmaceutics 2025 MDPI), anti-inflammatory/colitis (Front Pharmacol 2025 Frontiers; Gastroenterology PMC), muscle/tendon regeneration (Ann NY Acad Sci 2010), cardiac/lung protection (Front Pharmacol 2013 PMC) All findings referenced are from preclinical and in vitro studies. No approved clinical applications exist for this research compound.

Lyophilized: -20°C, desiccated, protected from light Simple Peptide; standard for peptide research compounds Avoid repeated freeze-thaw cycles. Once reconstituted, the solution should be refrigerated at 2-8°C and used within 28 days.

Peptide.co’s Klow has been verified at 99.3% purity through independent third-party HPLC testing. The current batch (Lot #YPB.264, GHK-Cu 50mg/KPV 10mg/BPC-157 10mg/TB500 10mg) includes a full Certificate of Analysis confirming identity, purity, and peptide content. All COAs are publicly available at coa.peptide.co. Testing covers HPLC purity analysis, mass spectrometry identity confirmation, heavy metals screening (<20 ppb), and microbial limits (TAMC/TYMC: 0 CFU). All products are manufactured in FDA-registered facilities in the United States.

Blend of: GHK-Cu (Gly-His-Lys-Cu²⁺), KPV (Lys-Pro-Val), BPC-157 (Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val), TB500 (Ac-LKKTETQ or TB4 fragment)

Klow is supplied as a lyophilized (freeze-dried) powder and must be reconstituted before use in research applications. The standard reconstitution solvent is bacteriostatic water (sterile water containing 0.9% benzyl alcohol). When reconstituting, direct the solvent gently along the inside wall of the vial — do not spray directly onto the lyophilized powder. Allow the compound to dissolve naturally without shaking or vortexing. For detailed reconstitution volume calculations, use the free Bacteriostatic Water Calculator or Peptide Reconstitution Calculator on Peptide.co.