GLOW vs KLOW

The K is KPV

GLOW is a blend of three components: the copper tripeptide GHK-Cu, BPC-157, and a thymosin beta-4 fragment — the same fragment supplied on its own as TB-500.

KLOW is those same three plus a fourth: KPV, a melanocortin-derived tripeptide.

That is the entire difference. Same three components, one added. The naming is doing the work — the K at the front is the KPV — and once you know that, the comparison is settled.

Side by side

The totals differ because the component count differs: a four-component blend is sold at a higher total milligram figure than a three-component one. The total on the label is the sum of what is in the vial, not a strength.

What KPV is

KPV is a tripeptide — lysine-proline-valine — derived from the α-MSH sequence, which also puts it in the melanocortin family. It is the only one of the four components with a published record centred on inflammation in the gut rather than on tissue repair or skin.

Two mouse studies are the core of it: one reporting anti-inflammatory potential in murine models of inflammatory bowel disease — DSS colitis and CD45RB-hi transfer colitis — in Inflammatory Bowel Diseases (PMID 18092346), and one reporting that PepT1-mediated uptake of the tripeptide reduced intestinal inflammation in DSS- and TNBS-induced colitis (PMID 18061177).

Both are mouse studies. KPV is also stocked on its own, as a 10mg vial and as capsules, and it is the component the Recovery Stack adds to BPC-157 and TB-500.

No literature exists on either blend

This has to be said and it applies to both equally.

No published study examines GLOW. No published study examines KLOW. Each of the four components has its own record — GHK-Cu's gene-expression reviews (PMID 29986520 and PMID 26236730), BPC-157's human IBD trial programme and animal literature, the thymosin beta-4 actin work, and KPV's two colitis studies — and not one of them describes the components supplied together.

So nothing is known from the literature about what adding the fourth component does. The honest version of the comparison is: KLOW contains KPV and GLOW does not, each component's evidence is linked from its own page, and the combination itself is unstudied. Anyone telling you what the fourth component adds is not reading it off a paper.

Which components are also sold separately

All four. If the question behind the comparison is really "do I need the blend", the parts are on the shelf individually: GHK-Cu in 50mg and 100mg vials and a 100mg pen, BPC-157 as a 10mg vial and as capsules, TB-500 as a 10mg vial, and KPV as a 10mg vial and as capsules.

Three of the four also appear in the stacks, which supply separate labelled vials in one box rather than pre-mixing them — the Recovery Stack and the Skin and Repair Stack in particular. A blend is one vial holding everything; a stack is several vials, each with its own label and its own certificate of analysis. That is a real difference in what arrives, and peptide stacks sets it out.

Supply note. Peptiq supplies research compounds for laboratory research use only. We are not a pharmacy and we do not supply licensed medicines. Where a licensed medicine is named on this page it is named to draw a distinction, not because we sell it, and nothing here is guidance on use.