The GLOW stack combines three research peptides that are usually studied on their own. Each profile below covers the compound’s identity data, what the published research looks like, and what is still unknown.
01
GHK-Cu
A naturally occurring copper-binding tripeptide first isolated from human plasma in 1973. The largest component of the GLOW blend by mass.
02
BPC-157
A synthetic 15-amino-acid peptide based on a sequence from a gastric protein. Studied mostly in animal models of tissue injury.
03
TB-500
A synthetic seven-residue fragment of thymosin beta-4 (Ac-LKKTETQ). Often confused with the full 43-residue protein.
Side-by-side identity data
| Property | GHK-Cu | BPC-157 | TB-500 |
|---|---|---|---|
| Type | Copper–tripeptide complex | Synthetic pentadecapeptide | Synthetic acetylated heptapeptide |
| Sequence | Gly-His-Lys (+ Cu²⁺) | GEPPPGKPADDAGLV | Ac-LKKTETQ |
| Molecular formula | C₁₄H₂₂CuN₆O₄ | C₆₂H₉₈N₁₆O₂₂ | C₃₈H₆₈N₁₀O₁₄ |
| Molecular weight | ≈401.9 g/mol (GHK alone 340.4) | ≈1419.5 g/mol | ≈889.0 g/mol |
| CAS number | 89030-95-5 | 137525-51-0 | 885340-08-9 |
| Typical share of a 70 mg GLOW vial | 50 mg | 10 mg | 10 mg |
None of these compounds is approved by the FDA or any other drug regulator for human use. BPC-157 and TB-500 are on the World Anti-Doping Agency prohibited list. Information on this site is for research and educational purposes only.