Peptide stack guide
The KLOW Stack: GHK-Cu, BPC-157, TB-500 & KPV explained
KLOW is one of the most searched peptide blends in skin and tissue research — a four-compound formulation available from RegenMed as a pre-mixed, third-party tested pen. This guide covers exactly what's in the KLOW stack, how the composition compares to GLOW, and what the published research says about each component.
Four research compounds, one blend
GHK-Cu, BPC-157, TB-500 and KPV combined at research-standard ratios in a single pre-mixed pen — no separate vials or mixing.
Third-party tested
Every batch is independently verified for identity and purity by an external laboratory, with certificates of analysis available.
Cold-chain shipped
Dispatched with temperature-controlled packaging and tracked delivery across the UK, EU and UAE.
What's in the KLOW stack?
The KLOW blend combines four peptides that appear together frequently in skin-repair and tissue-research literature. Each component has its own distinct research profile:
| Compound | Class | Primary research focus |
|---|---|---|
| GHK-Cu | Copper tripeptide | Collagen and elastin synthesis, skin remodelling and wound-model research |
| BPC-157 | Synthetic pentadecapeptide | Tissue repair, tendon and gut-lining research models |
| TB-500 | Thymosin beta-4 fragment | Cell migration, angiogenesis and recovery research |
| KPV | Alpha-MSH tripeptide fragment | Inflammatory-response and skin-barrier research |
KLOW vs GLOW: which stack is which?
The two blends are closely related and often confused. GLOW contains GHK-Cu, BPC-157 and TB-500. KLOW adds KPV as a fourth compound, which is why it is often described in research communities as “GLOW plus KPV”. Researchers comparing the two typically choose KLOW where the study design includes inflammatory-response endpoints, and GLOW where the focus is purely on collagen, skin and repair markers.
Both are available from RegenMed as pre-mixed pens, manufactured to the same purity standard and third-party tested batch by batch.
Research-grade stacks, pre-mixed and tested
KLOW and its related blends are supplied as convenient pre-mixed pens for laboratory research use, with certificates of analysis available for every batch.
Frequently asked questions
What is the KLOW stack?
What is the KLOW stack?
What is the difference between KLOW and GLOW?
What is the difference between KLOW and GLOW?
Is the KLOW pen third-party tested?
Is the KLOW pen third-party tested?
How should KLOW be stored?
How should KLOW be stored?
Is KLOW legal to buy in the UK?
Is KLOW legal to buy in the UK?
Related reading
All products sold by RegenMed are supplied strictly for laboratory research purposes only and are not for human consumption. Nothing on this page is medical advice, and no statement has been evaluated by the MHRA or FDA. Content summarising published research is provided for educational purposes.