How many units is 4 mg of KLOW blend?

It depends entirely on how much water you added. In a 80 mg vial reconstituted with 2 mL, the concentration is 40 mg/mL, so 4 mg is 0.1 mL, which is 10 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 5 units, and with 3 mL it is 15 units.

How much bacteriostatic water for a 80 mg KLOW blend vial?

2 mL is the usual choice. It gives 40 mg/mL, which puts the commonly reported range of 1 mg to 6 mg between roughly 2.5 and 15 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.

How many doses are in a 80 mg vial?

Divide 80 by your dose. At 4 mg that is 20 doses, which at 5 days on, 2 off is 28 days.

How many units of KLOW per day?

The commonly reported loading dose is 10 units a day, five days a week, from an 80 mg vial reconstituted with 2 mL. That is 4 mg of blend. Maintenance is usually reported at 5 units three times a week.

What is in 10 units of KLOW?

From 80 mg in 2 mL: 2.5 mg GHK-Cu, 500 mcg KPV, 500 mcg BPC-157 and 500 mcg TB-500. Inferred from the ratio on the label.

KLOW blend dosage calculator

KLOW is GLOW plus KPV: 80 mg in one vial. Enter your water and a dose in mg of total blend, and every draw is split back into the four peptides.

Peptulator, peptulator.com. Research use only, not medical advice.

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25 printable pages: dosing cards for the twelve most-used compounds at three water volumes, titration planners, a vial log, and five pages on what to do when it has already gone wrong.

Dose to units at the usual vial and water

Dose	U-100 units	Draw	Doses per vial	Vial lasts
1 mg	2.5 units	0.025 mL	80	112 days
2 mg	5 units	0.05 mL	40	56 days
3 mg	7.5 units	0.075 mL	26	36 days
4 mg	10 units	0.1 mL	20	28 days
5 mg	12.5 units	0.125 mL	16	22 days
6 mg	15 units	0.15 mL	13	18 days

80 mg vial in 2 mL of bacteriostatic water (40 mg/mL), U-100 insulin syringe, 5 days on, 2 off.

About KLOW blend

KLOW is the GLOW blend with 10 mg of KPV added: 50 mg GHK-Cu, 10 mg KPV, 10 mg BPC-157 and 10 mg TB-500, 80 mg in total, in a fixed 5:1:1:1 ratio. KPV is a tripeptide fragment of alpha-MSH studied for its anti-inflammatory effect in the gut. None of the four is an approved medicine and the blend is sold for research.

The most widely copied protocol reconstitutes the 80 mg vial with 2 mL, giving 40 mg/mL, and reports a loading phase of 10 units (4 mg of blend) five days a week for four weeks, then 5 units (2 mg) three times a week. A 10 unit draw at that concentration delivers 2.5 mg GHK-Cu and 500 mcg each of KPV, BPC-157 and TB-500. Reported cycles run 8 to 12 weeks on and 4 to 8 off. The KLOW dosage chart page lays out both phases at three water volumes.

What is in each draw

The vial is 50 mg GHK-Cu + 10 mg KPV + 10 mg BPC-157 + 10 mg TB-500, a fixed 5:1:1:1 ratio. Every draw contains all of them in that proportion. Split below for 80 mg in 2 mL (40 mg/mL). The per-component figures are inferred from the label ratio, not measured.

Draw	Total blend	GHK-Cu	KPV	BPC-157	TB-500
5 units	2 mg	1.25 mg	0.25 mg	0.25 mg	0.25 mg
10 units	4 mg	2.5 mg	0.5 mg	0.5 mg	0.5 mg
15 units	6 mg	3.75 mg	0.75 mg	0.75 mg	0.75 mg
20 units	8 mg	5 mg	1 mg	1 mg	1 mg
25 units	10 mg	6.25 mg	1.25 mg	1.25 mg	1.25 mg
30 units	12 mg	7.5 mg	1.5 mg	1.5 mg	1.5 mg

The same 80 mg vial at other water volumes

If the draw is awkward to read, change the water, not the dose. The dose stays the same; only the mark moves.

Vial	BAC water	Concentration	Draw	U-100 units	Doses/vial
80 mg	1 mL	80 mg/mL	0.05 mL	5 units	20
80 mg	2 mL	40 mg/mL	0.1 mL	10 units	20
80 mg	3 mL	26.67 mg/mL	0.15 mL	15 units	20

All rows above assume a 4 mg dose and a standard U-100 insulin syringe, where 100 units = 1 mL.

How long it lasts in the body

Not well characterised in humans. A decay curve is only drawn where a human half-life is documented, so there is none here. Treat any precise figure for KLOW blend elsewhere with caution.

Common questions

How many units is 4 mg of KLOW blend?: It depends entirely on how much water you added. In a 80 mg vial reconstituted with 2 mL, the concentration is 40 mg/mL, so 4 mg is 0.1 mL, which is 10 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 5 units, and with 3 mL it is 15 units.
How much bacteriostatic water for a 80 mg KLOW blend vial?: 2 mL is the usual choice. It gives 40 mg/mL, which puts the commonly reported range of 1 mg to 6 mg between roughly 2.5 and 15 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.
How many doses are in a 80 mg vial?: Divide 80 by your dose. At 4 mg that is 20 doses, which at 5 days on, 2 off is 28 days.
How many units of KLOW per day?: The commonly reported loading dose is 10 units a day, five days a week, from an 80 mg vial reconstituted with 2 mL. That is 4 mg of blend. Maintenance is usually reported at 5 units three times a week.
What is in 10 units of KLOW?: From 80 mg in 2 mL: 2.5 mg GHK-Cu, 500 mcg KPV, 500 mcg BPC-157 and 500 mcg TB-500. Inferred from the ratio on the label.

IndependentThis site does not sell peptides and is not owned by a vendor.

The maths is openThe formula is on every page and in the methodology. The code is one file with an automated test suite, run before each deploy.

How it earnsAffiliate links on one marked page, never inside the calculator.

ReviewedDose ranges and half-lives checked 3 September 2026.

Buying KLOW blend?

The where to buy page lists the vendors this site uses and what to check first. Peptide Bureau keeps the ranked scorecard.

Where to buyWhat to check before you order Vendor scorecardRanked vendors, at Peptide Bureau Build a full protocolThe stack builder at Peptide Bureau, about two minutes

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Repair, skin and blends

BPC-157 calculator mcg doses from a 5 or 10 mg vial
TB-500 calculator Loading and maintenance, in units
BPC-157 / TB-500 blend calculator The Wolverine stack, per component
GHK-Cu calculator 50 to 200 mg vials, mg doses
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KLOW blend calculator (this page)

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Dosage charts and schedules

Peptide reconstitution chart Concentration for every vial and water combination
Peptide dosing chart Printable unit tables for every compound
Retatrutide titration schedule 2 to 12 mg in units, stage by stage
Tirzepatide titration schedule 2.5 to 15 mg in units, stage by stage
Semaglutide titration schedule 0.25 to 2.4 mg in units, stage by stage
KLOW dosage and frequency chart The 80 mg blend at 2, 3 and 4 mL, both phases
GLOW dosage chart The 70 mg blend, units to each peptide
Wolverine stack dosing chart BPC-157 + TB-500, blend and separate vials
MOTS-c dosage chart 5 and 10 mg vials at three water volumes
Tirzepatide reconstitution chart Every vial size, every water volume, the whole ladder
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Printable dosing charts Four one-page charts to save, pin or print

Tools

Peptide calculator The general tool, any compound
Reconstitution calculator How much water to add, and why it matters
mg to units calculator Both directions, any concentration
Bacteriostatic water calculator Pick a volume that lands where you can read it
How to read an insulin syringe U-100 vs U-40, and the 2.5x error
The Protocol Pack Free 25-page printable reference
Where to buy Vendor notes and what to check first
1 mg to units on an insulin syringe The conversion table for every common concentration

Before you use these numbers This is a unit-conversion tool. It turns a vial strength and a water volume into a concentration, a draw volume and a syringe mark. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most compounds listed are sold for laboratory research and are not approved for human use. Nothing here is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always check the strength printed on your own vial rather than trusting a preset.