KLOW blend
GLOW with KPV added: GHK-Cu, BPC-157, TB-500 and KPV in one vial. The parts have mostly animal and lab research; the blend has never been studied.
- peptides: GHK-Cu, BPC-157, TB-500 and KPV
- 4
- studies of the blend itself
- 0
- typical vial total
- 80 mg
peptides: GHK-Cu, BPC-157, TB-500 and KPV
studies of the blend itself
typical vial total
5 sources, every claim linked. PepDose sells no peptides and takes no vendor money.
01 · What it is
What is the KLOW blend?
KLOW is a supplier name for a four-peptide blend. The K is KPV, a three-amino-acid fragment of alpha-MSH with anti-inflammatory activity.
No study has tested this combination.
What’s in the vial: Commonly 50 mg GHK-Cu + 10 mg BPC-157 + 10 mg TB-500 + 10 mg KPV in an 80 mg vial. Blend vials are sold by total weight and the split between peptides is not standardised. Read the label, then use the blend calculator to see what each draw contains.
Illustration.
What's in a typical KLOW vial
| In the vial | Total | In 10 units |
|---|---|---|
| GHK-Cu | 50 mg | 2.5 mg |
| BPC-157 | 10 mg | 0.5 mg |
| TB-500 | 10 mg | 0.5 mg |
| KPV | 10 mg | 0.5 mg |
80 mg in 2 mL = 40 mg/mL in total. 10 units on a U-100 syringe is 0.1 mL. Assumes the split on a typical label; check yours.
02 · How it works
How does the KLOW blend work?
It combines GLOW's repair-focused peptides with KPV, which in lab and mouse studies calmed inflammatory signalling (NF-κB) in gut cells.
03 · Research
What does the research on the KLOW blend show?
The KLOW blend itself has never been studied. Its parts have mostly animal and lab research: KPV reduced inflammatory signalling and colitis severity in human gut cells and mouse models, GHK-Cu supported collagen and tissue repair, and BPC-157 and TB-500 improved tissue healing in animal studies.
Evidence, ingredient by ingredient
04 · Side effects
What are the side effects of the KLOW blend?
The side effects of the KLOW blend are unknown because the combination has not been studied. For KPV, the FDA identified no human exposure data. All four components were on its compounding safety-risk list; those listings show as withdrawn as of April 2026.
- For KPV, the FDA identified no human exposure data. All four components were on its compounding safety-risk list (shown as withdrawn as of April 2026). The blend's safety has not been studied.[1]
Commonly listed reasons to avoid it
- Pregnancy and breastfeeding
- Copper metabolism disorders such as Wilson's disease
Not approved
05 · Legal and regulatory status
Is the KLOW blend FDA-approved?
No. KLOW is a supplier name for a four-peptide blend, and it is not FDA-approved. None of its components (GHK-Cu, BPC-157, TB-500 and KPV) is an approved drug. Vials sold as KLOW are unregulated research products.
- Not FDA-approved. None of its components is an approved drug.[1]
06 · Mixing and units
How do you mix the KLOW blend and read the units?
Units on a U-100 syringe = dose (mg) ÷ concentration (mg/mL) × 100. For example, a 80 mg vial mixed with 2 mL of bacteriostatic water is 40 mg/mL in total, so 10 units hold 4 mg. Pick your vial and water below; the maths is the same for any brand of KLOW blend.
- 1 Peptide vial
- 2 Bacteriostatic water
- 3 U-100 syringe
- 4 Alcohol swabs
Vial size
Water added
- KLOW blend in the vial
- 80 mg
- Water added
- 2 mL
- Strength
- 40 mg/mL
- 1 unit holds
- 400 mcg
KLOW dosage calculator
The blend calculator works out the units to draw and what each draw holds of every ingredient. Open it with the common KLOW split already filled in; if your label says something different, the label wins.
Open the KLOW dosage calculator- Step 1
Clean
Wipe the vial stopper with an alcohol swab and let it dry.
- Step 2
Add water
Let the bacteriostatic water run slowly down the inside wall of the vial.
- Step 3
Swirl
Swirl or roll gently until clear. Don't shake.
- Step 4
Label and chill
Write the date and strength (mg/mL) on the vial and keep it in the fridge.
The full KLOW blend protocol
- Week-by-week schedule and titration
- What to track and when
- Stacking notes and timing
- Dose tracker with injection-site rotation
- Every study explained in detail
- Step-by-step start guide
07 · Questions
Common questions about the KLOW blend
How do I reconstitute a KLOW 80 mg vial?
With 2 mL the vial is 40 mg/mL in total. If it is 50/10/10/10, each 10 units holds about 2.5 mg GHK-Cu and 0.5 mg each of BPC-157, TB-500 and KPV. Use the blend calculator for your label's split.
What does KPV do?
KPV is a fragment of alpha-MSH. In lab and mouse studies it reduced gut inflammation. It has not been tested in human trials.
What is in the KLOW blend?
Usually GHK-Cu, BPC-157, TB-500 and KPV in one vial, commonly 50 mg + 10 mg + 10 mg + 10 mg in an 80 mg vial. The split is not standardised, so read your label.
KLOW vs GLOW: what is the difference?
KLOW is GLOW with KPV added. GLOW has GHK-Cu, BPC-157 and TB-500; KLOW adds KPV, a small anti-inflammatory peptide studied in gut cells and mouse models of colitis. Neither blend has been studied as a combination.
Has the KLOW blend been studied?
No. No study has tested this combination. Its parts have mostly animal and lab research.
Is the KLOW blend FDA-approved?
No. KLOW is a supplier name, not a medicine. None of its components is an approved drug.
Sources
- 1.FDA compounding safety-risk list
FDA. Bulk drug substances for compounding that may present significant safety risks (as of Apr 22, 2026) · FDA - 2.PepT1-mediated tripeptide KPV uptake reduces intestinal inflammation
Dalmasso G et al. Gastroenterology 2008;134:166-178 · Animal study - 3.Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data
Pickart L, Margolina A. Int J Mol Sci 2018;19:1987 · Review - 4.Emerging use of BPC-157 in orthopaedic sports medicine: a systematic review
Vasireddi N et al. HSS J 2025;21:485-495 · Review - 5.Thymosin beta4 accelerates wound healing
Malinda KM et al. J Invest Dermatol 1999;113:364-368 · Animal study