KLOW Peptide Calculator
How many units of KLOW do you draw? Most people dose KLOW by its GHK-Cu, typically around 2 mg, which on the common 80 mg vial mixed with 3 mL of BAC water is 3.2 mg of the blend and 12 units. Enter your target peptide's dose in mg and this KLOW peptide dosage calculator shows the units and what each draw delivers of all four.
Multi-peptide vial dosing
Doses for blended vials where peptides share one fixed ratio.
Blends have a locked ratio
When peptides are combined in one vial, you cannot dose them independently. Setting your target dose for one peptide automatically determines how much of every other peptide you get per injection.
Not all peptides can be safely blended
Combining peptides in a single vial can affect stability, potency, and safety. Some compounds degrade or interact when mixed. Only use blends from reputable sources with verified compatibility, and consult your healthcare provider before using any blended protocol. This calculator does not validate whether a given combination is safe.
This calculator is for informational purposes only, so always double-check your result with a healthcare provider. It does the dosing maths; it does not assess whether a blend is safe or stable. KLOW components are not approved for human use. We assume no liability for dosing errors.
Last updated October 2026 · Reviewed by the Regimen Team
How to use it
How to use this calculator
- 01
Check your vial matches
The preset is loaded with the common KLOW ratio, GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg. If your vial differs, edit the amounts.
- 02
Enter your BAC water
3 mL is the most common choice, then 2 mL. It sets the concentration of every peptide at once.
- 03
Pick one peptide and enter its dose in mg
Most people dose KLOW to its GHK-Cu, typically around 2 mg. You can only choose one; the ratio fixes the rest, and the calculator shows what they land on.
- 04
Read the per-injection breakdown
Units to draw, volume, and exactly how many mcg of each compound that delivers.
Why a blend needs different maths
A single-peptide vial has one question: how many units for my dose. A blend has a harder one, because you cannot choose independently.
KLOW arrives as GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg, 80 mg of powder in one vial. Add water and every peptide dissolves into the same solution at the same time. From then on, every draw contains all of them in that fixed proportion. Set your target at 300 mcg of BPC-157 and you have simultaneously decided your GHK-Cu dose, whether you meant to or not.
That is what the calculator above makes visible. Pick one compound, and it shows what the others land on.
The ratio on the vial is a vendor decision
Worth being blunt about: 80 mg split GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, KPV 10 mg is a formulation someone chose to sell. It is not a dose anyone established in a trial, and it varies between suppliers.
So two things follow. Check what is actually printed on your vial rather than assuming the common ratio, and treat any "KLOW dosing chart" you find, including the numbers this page returns, as arithmetic applied to your inputs rather than a recommendation.
What a KLOW draw actually delivers
At the common 80 mg ratio in 3 mL of BAC water, the solution is about 26.7 mg/mL overall. GHK-Cu is 50 of the 80 mg, so it dominates: roughly five times whatever you get of BPC-157, TB-500 or KPV individually.
KLOW totals 80 mg against GLOW's 70 mg, so the same water gives a different overall concentration. Unit for unit, the GHK-Cu, BPC-157 and TB-500 are the same in both, and KLOW adds KPV. It is the blend's mg figure that does not carry over: 4 mg of KLOW and 4 mg of GLOW are different draws, which is why they have separate pages.
For how much people take, how often, and a units chart for the common 3 mL mix, see the KLOW peptide dosage guide.
Dose to the GHK-Cu, the way most people do
Most people dose KLOW by its GHK-Cu, the biggest part of the vial, typically around 2 mg. With the common 80 mg vial mixed with 3 mL of BAC water, 2 mg of GHK-Cu is 12 units, and that draw carries 400 mcg each of BPC-157, TB-500 and KPV with it. That is why the calculator opens on GHK-Cu at 2 mg and 3 mL.
You can dose to another peptide instead: pick it as the target and the ratio sets the rest. 400 mcg of BPC-157 is the same 12 units. Whatever you target, enter the dose in mg and check the units are large enough to read before you commit. A small GHK-Cu target such as 250 mcg is 1.5 units on a 3 mL mix.
What the evidence actually supports
The components are not equally studied, and none of them is approved.
- BPC-157. Animal-heavy. A 2025 review of 544 papers found a single human clinical study. No completed human efficacy trial.
- TB-500. The injected fragment has no human efficacy trial. The human data people cite is for full-length recombinant thymosin beta-4, which is a different molecule.
- GHK-Cu. Real human data exists for topical use as a cosmetic ingredient. Injectable GHK-Cu does not have it.
- KPV. Preclinical only. No human efficacy trial for the injected peptide.
The FDA removed these from its Category 2 bulk-substances list in April 2026. That is frequently reported as a green light. It was not: the nominations were withdrawn by the nominators, which is not a safety clearance, and every component remains an unapproved new drug.
If you are drug-tested, treat the vial as disqualifying. WADA prohibits BPC-157 and TB-500 at all times, and the S0 catch-all covers substances without human therapeutic approval regardless of what a blend is called.
Mixing and storage
Aim the water at the glass wall rather than straight onto the powder, and let it run down the side. Swirl gently until clear. Do not shake, which foams the solution and can damage the peptides.
Store reconstituted in the fridge at 2 to 8 degrees C, upright, out of the light, never frozen. Discard if it goes cloudy or discoloured.
Tracking a blend properly
The awkward thing about a blend is that your log says "KLOW" while your body received four different compounds. That makes a careful record more useful, not less: the dose, the date, the site and how you felt are what let you judge whether the vial is doing anything.
Regimen logs every KLOW shot with the units for your vial, shows what's in the blend, suggests the next injection site and puts side effects and bloodwork on the same timeline as your doses.
Track your blend freeGet the app
A blend is several compounds at once. Track it that way.
Regimen logs every KLOW shot, shows what's in the blend, works out the units for your vial, suggests the next injection site and puts side effects and bloodwork on the same timeline as your doses. Free for one compound.
Free to download. Free for your first compound.
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