GLOW Peptide Calculator

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.

GLOW arrives as GHK-Cu 50 mg, BPC-157 10 mg, TB-500 10 mg, 70 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: 70 mg split GHK-Cu 50 mg, BPC-157 10 mg, TB-500 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 "GLOW dosing chart" you find, including the numbers this page returns, as arithmetic applied to your inputs rather than a recommendation.

What a GLOW draw actually delivers

At the common 70 mg ratio in 2 mL of BAC water, the solution is 35 mg/mL overall. GHK-Cu makes up 50 of the 70 mg, so it dominates every draw: roughly five times whatever you get of BPC-157 or TB-500 individually.

That is the practical consequence of the ratio. If you are dosing to a BPC-157 target, GHK-Cu is along for the ride at five times the amount. Run your own vial through the calculator and the breakdown is explicit.

Dose to the small component, not the big one

Here is something the ratio does to you that is worth knowing before you draw.

Because GHK-Cu is 50 of the 70 mg, it is by far the most concentrated thing in the vial. At 2 mL that is 25,000 mcg/mL. So if you set your target as a modest 250 mcg of GHK-Cu, the calculator correctly returns 1 unit — a draw so small you cannot measure it reliably on any insulin syringe.

Dose to one of the 10 mg components instead and the numbers become usable. Targeting 250 mcg of BPC-157 needs 5 units, and delivers 1,250 mcg of GHK-Cu alongside it. Same vial, same ratio, a draw you can actually see.

This is not a quirk of the tool, it is the ratio. Run your own vial above and check that the units you get are large enough to measure before you commit to a target.

What the evidence actually supports

The components are not equally studied, and none of them is approved.

• BPC-157. Animal-heavy. A 2025 review screened 544 papers and 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.

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, there was no safety finding, and every component remains an unapproved new drug.

If you are drug-tested, treat the vial as disqualifying. WADA prohibits BPC-157 at all times and TB-500 since 2011, 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 "GLOW" while your body received three different compounds. If you later want to know which one was doing something, an undifferentiated entry cannot tell you.