GLOW Peptide Blend Calculator
A three-compound vial means every draw contains all three in a fixed ratio. Enter the amounts exactly as printed on your vial — nothing is pre-filled.
Regulatory status — read this first
None of the three components is approved by the FDA, and GLOW is not an approved product. FDA lists each of them among bulk drug substances that may present significant safety risks in compounding. FDA's wording, verbatim:
| Component | FDA statement (excerpt) |
|---|---|
| BPC-157 | "Compounded drugs containing BPC-157 may pose risk for immunogenicity for certain routes of administration and may have complexities with regard to peptide-related impurities and active pharmaceutical ingredient (API) characterization." |
| TB-500 (thymosin beta-4 fragment) | "Compounded drugs containing thymosin Beta-4, Fragment (LKKTETQ) may pose risk for immunogenicity for certain routes of administration due to the potential for aggregation as well as peptide-related impurities." |
| GHK-Cu | "Compounded injectable drugs containing GHK-Cu may pose risk for immunogenicity due to the potential for aggregation and peptide-related impurities." |
Source: FDA — Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks (content current as of 04/22/2026). Read the full entries at the source.
Calculator
| Compound | Amount in vial (mg, from label) |
|---|---|
| BPC-157 | |
| TB-500 | |
| GHK-Cu |
How blend math works
Each compound's concentration = its vial amount ÷ the shared diluent volume. The draw volume is set by one compound; the others come along in the same ratio, so you cannot change one without changing all three.
Arithmetic example only (not a dose): a vial labeled 10 mg / 10 mg / 50 mg with 3 mL diluent, where BPC-157 sets the draw at 500 mcg → BPC-157 is 3,333.3 mcg/mL → 0.15 mL = 15 units, containing 500 mcg TB-500 and 2,500 mcg GHK-Cu.
Single-compound vial instead? Use the dose calculator or BPC-157 calculator. Four-peptide blend: KLOW calculator. Other blends: peptide mixing / blend calculator.
FAQ
What is GLOW?
GLOW is a name used online for a vial containing three peptides — BPC-157, TB-500 and GHK-Cu — in one blend (often sold as a 70 mg vial). It is not an FDA-approved product, and amounts vary by vial, so always use the numbers printed on your own label.
Does this page give a GLOW peptide dosage or dosage chart?
No. This page is a calculation tool only. It converts the vial amounts and diluent volume you enter into concentration, U-100 syringe units and per-compound amounts. It does not suggest any dose, schedule or protocol.
How do I calculate syringe units for a GLOW blend?
All three compounds share one diluent volume. Choose which compound sets the draw size; the calculator shows the volume, U-100 units, and how much of the other two is in that same draw.
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