Ingredients & ratios
GLOW Peptide Stack: Ingredients and Ratios Explained
The GLOW peptide stack combines GHK-Cu, BPC-157 and TB-500. GLOW names the combination; GHK-Cu is one of its ingredients. This guide uses a 70 mg label example with a 5:1:1 ratio by mass, in that ingredient order.
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What is in the GLOW 70 mg blend?
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| Ingredient | Listed amount per vial | Share of the total |
|---|---|---|
| GHK-Cu | 50 mg | 71.4% |
| BPC-157 | 10 mg | 14.3% |
| TB-500 | 10 mg | 14.3% |
| Total | 70 mg | 100% |
The amounts above are the label example used in this guide. Percentages are calculated from those amounts and rounded. The buying guide links to the underlying product record; a label amount is different from an independently measured assay result.
Each division represents 10 mg.
- GHK-Cu 50 mg 71.4% of total
- BPC-157 10 mg 14.3% of total
- TB-500 10 mg 14.3% of total
The ratio describes weight. It does not describe molecule counts or shares of the blend’s effects.
Basis: the 70 mg label example described above. Percentages are calculated from the listed amounts and rounded.
GLOW 70 means 70 mg across all three ingredients: 50 + 10 + 10. It does not mean 70 mg of each peptide, and it does not specify an amount to administer. The GLOW peptide dosage guide explains the separate meanings of vial content, concentration and dose.
GHK-Cu: glycine, histidine, lysine and copper
GHK is a three-amino-acid peptide made from glycine, histidine and lysine. The “Cu” identifies copper bound to the peptide. Researchers have characterized this copper(II) complex in solution. Freedman and colleagues’ structural study
On a label, “50 mg GHK-Cu” refers to the copper-peptide complex. It should not be read as 50 mg of elemental copper.
BPC-157: a 15-amino-acid peptide
BPC-157 is a synthetic peptide containing 15 amino acids. Its sequence is GEPPPGKPADDAGLV, written in one-letter amino-acid codes. The “157” is part of its name; it does not describe the peptide’s length or its amount in a vial. BPC-157 identity in a primary laboratory study
TB-500: distinguish the name from the molecular sequence
Full-length thymosin beta-4 contains 43 amino acids. Researchers have also studied shorter sequences from that molecule. Philp and colleagues’ thymosin beta-4 study
An analytical study identified Ac-LKKTETQ, an acetylated seven-amino-acid fragment corresponding to positions 17–23 of thymosin beta-4, in the TB-500 preparation it examined. Here, “Ac” indicates an acetyl group attached to the fragment. Esposito and colleagues’ TB-500 analysis
The full-length molecule and that fragment are different compounds. Match the complete name and sequence when connecting a product record to a paper; the 2012 analysis identifies its own sample, not every preparation called TB-500. The GLOW peptide COA guide explains how identity testing differs from purity and content measurements.
How does the GLOW stack’s 5:1:1 ratio work?
Divide the three label amounts by 10: 50:10:10 becomes 5:1:1. That means five parts GHK-Cu, one part BPC-157 and one part TB-500, for seven parts altogether.
Keep the ingredient order beside the ratio. In BPC-157 : TB-500 : GHK-Cu order, the same formula reads 1:1:5. The numbers changed places because the ingredient names did.
These proportions describe weight. A 71.4% share of the mass does not mean GHK-Cu produces 71.4% of the blend’s effects. It also does not describe the share of molecules: different compounds have different molecular weights.
The same ratio can describe different totals
The table below halves every listed ingredient amount. The 35 mg column is an illustrative calculation, not a separate product listing or a dose.
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| Ingredient | Listed 70 mg blend | Illustrative 35 mg total |
|---|---|---|
| GHK-Cu | 50 mg | 25 mg |
| BPC-157 | 10 mg | 5 mg |
| TB-500 | 10 mg | 5 mg |
Both columns have a 5:1:1 ratio. One has twice the total amount of the other. The total tells you the combined quantity; the ratio tells you how that quantity is divided.
Does “stack” mean the ingredients are in one vial?
“Stack” describes a combination; the packaging description tells you how it is supplied. The example here concerns lyophilized, or freeze-dried, powder. That describes its physical form rather than establishing a clinical formulation.
When reading any combination’s description, check whether the amounts apply to one vial, each separate container or the whole package. The ingredient names alone do not answer that question.
A premixed formula keeps the relative amounts fixed. Increasing the quantity of a uniform blend increases all three components together; changing just one ingredient changes the composition.
For results from the individual ingredients, see GLOW peptide research: human trials and ingredient studies.
Sources for
this article.
Original studies and public guidance cited in this article.
- 01
Freedman et al.: the GHK copper(II) complex in solution
PubMed / U.S. National Library of Medicine · Original structural study
- 02
BPC-157 and growth-hormone receptor expression in tendon fibroblasts
PubMed Central · Rat-cell experiment
- 03
Philp et al.: the thymosin beta-4 actin-binding site and angiogenesis
FASEB Journal · 2003 · Laboratory experiments
- 04
Esposito et al.: analytical identification of a TB-500 preparation
Drug Testing and Analysis · 2012 · Sample-specific analytical study
- 05
Metric and SI prefixes
National Institute of Standards and Technology · Units and conversions
