KLOW is a research blend that combines four peptides in one product: BPC-157 (10mg), TB-500 (10mg), KPV (10mg) and GHK-Cu (50mg). GLOW is the same blend without KPV, so it contains BPC-157, TB-500 and GHK-Cu. Both are sold by Explicit SARMs strictly as reference material for laboratory research.
By the Explicit SARMs Team. Updated October 23, 2026.
What is in KLOW?
The KLOW vial (KLOW 80mg) holds 80mg of lyophilized peptide in total, made up of four components:
- BPC-157, 10mg. A synthetic 15-amino-acid peptide derived from a fragment of a gastric protein. It is one of the most widely cited research peptides.
- TB-500, 10mg. A synthetic peptide modeled on a region of thymosin beta-4, an actin-binding protein found in most cell types.
- KPV, 10mg. A tripeptide (lysine-proline-valine) that corresponds to the C-terminal end of alpha-melanocyte-stimulating hormone.
- GHK-Cu, 50mg. A copper-binding tripeptide (glycyl-L-histidyl-L-lysine) that is studied in skin and connective tissue biology.
KLOW is also available in a capsule format, KLOW (Glow+) Capsules, which uses the same four components.
What is in GLOW?
GLOW drops the KPV and keeps the other three peptides. The vial (GLOW 70mg) contains BPC-157 (10mg), TB-500 (10mg) and GHK-Cu (50mg), for 70mg in total. A capsule version, GLOW Capsules, is also listed.
What is the difference between KLOW and GLOW?
The only difference is KPV. KLOW has four peptides and GLOW has three. Everything else, including the amounts of BPC-157, TB-500 and GHK-Cu, is the same. Researchers who want to study the three-peptide combination on its own, or compare it against the four-peptide version, can run both side by side.
| Component | KLOW | GLOW |
|---|---|---|
| BPC-157 | 10mg | 10mg |
| TB-500 | 10mg | 10mg |
| KPV | 10mg | None |
| GHK-Cu | 50mg | 50mg |
| Total per vial | 80mg | 70mg |
Why do researchers use multi-peptide blends?
A blend puts several reference compounds into one product, which simplifies sourcing when a study design already calls for all of them. It also means one lot number and one certificate of analysis cover every component. The trade-off is flexibility: if a protocol needs the components in different ratios, single-peptide products give more control. We list each component on its own as well, including BPC-157, TB-500, KPV and GHK-Cu.
Where does the name KLOW come from?
KLOW is an informal market name rather than a scientific one. It is usually read as GLOW with a K added for KPV. GLOW in turn is a nickname that grew up around the BPC-157, TB-500 and GHK-Cu combination. Neither name refers to any approved product or indication, and we use them only to identify the blend.
How is KLOW tested?
Every batch we sell is manufactured in the US and tested at three stages: twice by our manufacturer (when the raw material arrives and after lyophilization), then independently by Accumark, a third-party analytical lab, on our behalf when we receive the finished batch. For a blend, the certificate of analysis (COA) should confirm the identity of each component and report purity. You can request the COA for your lot through our contact page. Our guide on how to read a COA explains what to look for.
What should I check on a KLOW COA?
- That all four components are identified, usually by mass spectrometry.
- A purity result for the blend or for each component, usually by HPLC.
- A lot number that matches the label on your vial.
- The name of the testing lab and the test date.
Is KLOW approved for human use?
No. KLOW, GLOW and each of their components are research compounds. None of them is an approved drug, and we sell them only for laboratory and in-vitro research. We do not provide usage guidance of any kind.
How do I order KLOW or GLOW?
Both are in our research peptides collection. We accept debit and credit cards, Zelle, Cash App and ACH bank transfer. We ship within the United States and to Canada, the United Kingdom, Ireland, Portugal and Puerto Rico. Orders placed before 2:00 PM Eastern, Monday to Friday, ship the same day.
Is KLOW the same as KLOW (Glow+) capsules?
They share the same four components, BPC-157, TB-500, KPV and GHK-Cu, but in different physical forms. The vial holds lyophilized powder, while the capsule product holds a measured fill in each capsule. Each product has its own lot number and its own COA.
Does KLOW contain anything besides the four peptides?
The vial contains the lyophilized peptides. Capsule products also contain the capsule shell and any fill material listed on the product page. If you need the full composition for a specific lot, ask for the COA.
For laboratory research use only. Not for human consumption. Sold by Explicit SARMs solely as reference material for in-vitro and laboratory research by qualified professionals. Not evaluated by the FDA and not intended to diagnose, treat, cure or prevent any disease.