What KLOW is
KLOW is the GLOW blend with a fourth peptide added: KPV, a small fragment marketed for inflammation. The other three are GHK-Cu, BPC-157, and TB-500.
Like GLOW, KLOW is a nickname, not a standard formula. Total amounts around 80 mg are common, but the split between ingredients depends on the seller.
Regulatory status in 2026
None of the four components is an approved drug or on the compounding list. A pre-mixed vial of all four has never been evaluated by FDA.
All four components are removed from FDA's Category 2 list. This does not make any of them legal to compound.
FDA's advisory committee narrowly recommends adding BPC-157, TB-500, and KPV to the compounding list, against FDA staff advice. GHK-Cu was not on that docket.
No component is on the compounding list. BPC-157 (WADA S0) and TB-500 (WADA S2) are banned in sport at all times.
Regulatory status can change. Check the sources linked at the bottom of this page before relying on anything here.
Claims vs. what the research shows
Every component has its own page. The combination has no research of its own.
KPV adds anti-inflammatory benefits.
KPV reduces inflammation in animal and cell models of colitis. Not tested in people, alone or in a blend.
Animal or limited evidenceFour peptides are better than three.
No study has compared KLOW to GLOW or to the components alone.
Insufficient dataClears skin and speeds recovery.
Based on separate animal and small topical studies of individual ingredients.
Animal or limited evidenceStorage and stability
Peptides break down with heat, light, moisture, and repeated freezing and thawing. Degraded product is one common reason two vials of the "same" peptide behave differently. These are general peptide handling practices. Your supplier's certificate of analysis or label takes priority. A blend can only be as stable as its least stable ingredient, and no stability data exists for these combinations.
Sealed powder (lyophilized)
- Refrigerate at 36 to 46°F (2 to 8°C) for routine storage.
- Freezer is generally used for long-term storage.
- Keep in its original sealed vial, away from light.
- Let a cold vial reach room temperature before opening to limit condensation.
After reconstitution
- Keep refrigerated. Do not freeze.
- Protect from light. Clear glass lets it through.
- Opened multi-dose bacteriostatic water is typically discarded 28 days after first puncture.
- Log the mix date so you know the vial's age at a glance.
Light exposure is easy to overlook in a fridge door that opens dozens of times a day. VIALTIGHT is building stackable cases that block light from every side. See vialtight.com for updates.
Blend math
With a blend, each ingredient has its own concentration. Enter the amount of each from your vial's label and the water you added. On a U-100 syringe, each unit is 0.01 mL. The defaults are a common seller's formula, not a standard.
This shows concentration only. It is not a dosing recommendation. If your label lists only a total amount, you can't calculate this, which is itself a red flag.
Safety flags
Product quality is unverified. Gray-market vials have been found underdosed, mislabeled, or contaminated. A certificate of analysis from the seller is not the same as independent testing.
You can't verify each ingredient. Many certificates of analysis for blends only report total purity. Ask for amounts of each component.
Unknown interactions. No one has studied what these four do together in the body.
Tested athletes. Contains BPC-157 (WADA S0) and TB-500 (WADA S2), both banned at all times.
FAQ
What's the difference between KLOW and GLOW?
KLOW adds KPV to the three peptides in GLOW. Exact amounts of each vary by seller.
Why is GHK-Cu usually the biggest part?
Sellers typically weight blends toward GHK-Cu. There's no research basis for any particular ratio.
Does VialTracker tell me what to take?
No. VialTracker organizes the information you enter and runs the math. It does not recommend doses, products, or protocols.