Use this GLOW calculator to turn a GLOW blend vial, your bacteriostatic water volume, and a dose into the exact mL and units to draw — and to see how much GHK-Cu, BPC-157 and TB-500 each draw delivers. This page covers the math only; GLOW is a research blend, not an approved medicine.
- Common vial
- 70 mg blend
- Typical label
- 50 + 10 + 10 mg
- Common syringe
- U-100 insulin
- Last reviewed
Quick math example
A 70 mg GLOW vial mixed with 3.5 mL gives 20 mg/mL. A 2 mg total dose is 0.1 mL, which equals 10 units on a U-100 syringe.
What is in a GLOW vial
GLOW is a three-peptide blend sold in a single vial, most commonly labelled as 50 mg GHK-Cu, 10 mg BPC-157 and 10 mg TB-500, for 70 mg in total. Labels vary between suppliers, so check the amounts printed on your own vial before you calculate.
Every draw contains all three peptides in the labelled ratio. With the common 50/10/10 label, GHK-Cu is about 71.4% of each draw and BPC-157 and TB-500 are about 14.3% each.
- GHK-Cu 50 mg (71.4%) · BPC-157 10 mg (14.3%) · TB-500 10 mg (14.3%)
- Total = 70 mg — enter this as the vial amount
- The ratio is fixed: one draw always contains all three
How the GLOW calculation works
Enter the vial's total milligrams (70 mg for the common label), your water volume, and the total amount of blend per dose. The calculator returns concentration, mL and syringe units as it would for a single peptide.
To see what one draw contains, multiply the total by each peptide's share. A 1.75 mg draw is 1.25 mg GHK-Cu (1.75 × 50/70) and 250 mcg each of BPC-157 and TB-500 (1.75 × 10/70).
- 70 mg / 3.5 mL = 20 mg/mL of total blend
- 1.75 mg total / 20 mg per mL = 0.0875 mL ≈ 8.75 units
- Per draw: 1.25 mg GHK-Cu + 250 mcg BPC-157 + 250 mcg TB-500
How much BAC water for a 70 mg GLOW vial
3.5 mL gives a round 20 mg/mL, so every 10 units on a U-100 syringe is 2 mg of blend: about 1.43 mg GHK-Cu and 286 mcg each of BPC-157 and TB-500. 3 mL gives about 23.3 mg/mL and 2 mL gives 35 mg/mL, where 10 units is 3.5 mg of blend.
Check the vial can hold the volume before adding it. A 70 mg vial holds forty 1.75 mg doses, which can outlast the reconstituted beyond-use date, so plan around that date as well as the dose count.
- 70 mg / 3.5 mL = 20 mg/mL → 10 units = 2 mg blend
- 70 mg / 3 mL = 23.3 mg/mL → 10 units ≈ 2.33 mg blend
- 70 mg / 2 mL = 35 mg/mL → 10 units = 3.5 mg blend
Dosing GLOW by one peptide
If your protocol names one component — for example "250 mcg of BPC-157" — divide by that peptide's share to get the total GLOW dose: 250 mcg ÷ (10/70) = 1.75 mg of blend. Enter 1.75 mg as the dose; the GHK-Cu and TB-500 follow in the fixed ratio.
GLOW differs from KLOW only by KPV, but that changes every share, so a draw sized for one blend is wrong for the other. Always calculate from the label on the vial in front of you.
- Total dose = component dose ÷ component share
- 250 mcg BPC-157 ÷ 0.143 ≈ 1.75 mg of GLOW
- KLOW (80 mg, with KPV) has different shares
Frequently asked questions
What is GLOW peptide?
How much BAC water should I add to GLOW?
What is the difference between GLOW and KLOW?
Does this calculator recommend a GLOW dose?
Primary sources
Background references for this calculator. PepSync does not make clinical claims; these citations support the educational context only.