PeptideCalculations
four-peptide repair blend

KLOW blend dosage

KLOW is one vial holding GHK-Cu, KPV, BPC-157 and TB-500, named by the initials (the O is for the copper in GHK-Cu). The common 80 mg vial is 50 mg GHK-Cu plus 10 mg each of BPC-157, TB-500 and KPV. People inject 10 to 20 units a day at 20 mg/mL, which delivers 1.25 to 2.5 mg GHK-Cu and 250 to 500 mcg of each of the others. No study has tested the blend; the component doses are what the community uses for each peptide alone.

By the Peptide Calculations editors · Updated 2026-10-19 · Studied for wound and tissue repair, skin, gut inflammation (each component separately; the blend itself has no studies)

Dose
2 mg to 4 mg of blend per injection
per day · Commonly reported
How often
once daily
any time; near the injury site is common for the BPC-157 and TB-500 effect people are after
How long
4 to 8 weeks
then 4 weeks off
Route
subcutaneous
abdomen or near the injury

1Dose to units chart

80 mg vial + 4 mL bacteriostatic water = 20 mg/mL, so each unit on a U-100 insulin syringe holds 200 mcg.

DoseDraw (mL)UnitsDoses in vial
2 mg0.11040
2.5 mg0.1312.532
4 mg0.22020
5 mg0.252516
Open in the KLOW blend calculatorFull 80 mg + 4 mL table

80 mg + 4 mL = 20 mg/mL total peptide, so 2 mg of blend = 0.1 mL = 10 units. Each 10 units carries 1.25 mg GHK-Cu, 250 mcg BPC-157, 250 mcg TB-500 and 250 mcg KPV. Read your label: a 55 mg KLOW vial has a different split and the per-unit amounts change.

2Side effects

injection site redness and small lumps (GHK-Cu is the usual cause)blue tint at the site from the copperfatigue or headache (reported)nausea (reported)
Before you start. No human or animal study has tested this combination; each component has its own evidence, with BPC-157 and TB-500 mostly animal data and KPV mouse data only. Because the ratio is fixed, you cannot raise one peptide without raising all four, and GHK-Cu dominates the mass. People with Wilson's disease or copper sensitivity should skip it. Not medical advice. Talk to a clinician and start low.

Storage: lyophilized: fridge or freezer; reconstituted: fridge, use within 4 weeks (commonly reported); GHK-Cu gives the solution a blue color

3KLOW blend dosage questions

KLOW peptide dosage?

Community use is 10 to 20 units a day of an 80 mg vial mixed with 4 mL (20 mg/mL). That delivers 1.25 to 2.5 mg GHK-Cu and 250 to 500 mcg each of BPC-157, TB-500 and KPV. Start at 10 units.

How much water for a KLOW 80 mg vial?

4 mL gives 20 mg/mL and round numbers: 10 units = 2 mg of blend. 3 mL gives 26.7 mg/mL, where 10 units is 1.67 mg GHK-Cu and 333 mcg of each other peptide. Either is fine; write the concentration on the vial.

What is in KLOW?

GHK-Cu (copper peptide), KPV, BPC-157 and TB-500 in one vial. The usual 80 mg vial is a 50/10/10/10 split. GLOW is the same minus KPV.

Why does my KLOW turn blue and leave a mark?

The copper in GHK-Cu colors the solution blue and can leave a faint tint or small bump at the injection site. Inject slowly, rotate sites and use more water to lower the concentration if it bothers you.

4Sources

  1. KLOW blend reconstitution and dose breakdown (50 mg GHK-Cu + 10 mg BPC-157 + 10 mg TB-500 + 10 mg KPV per vial)
  2. Kannengiesser K et al., Inflamm Bowel Dis 2008, KPV in murine models of inflammatory bowel disease (PubMed 18092346)
  3. The GLOW Protocol, Hunter's Health Hacks (blend composition and reconstitution practice for the GHK-Cu/BPC-157/TB-500 vials)

Educational summary of published labels, trials and commonly reported use. Not medical advice.

Brands we recommend for KLOW blendIndependent. No affiliation with any brand, no affiliate links, no referral codes, no paid placements.
  1. 1Licensed Peptides two accredited labs on every lot, certificates public, card and Apple Pay checkout
  2. 2Core Peptides long track record, public certificates, wide catalog
  3. 3Ascension Peptides public third-party testing, clear pricing