GHK-Cu vs BPC-157

What is GHK-Cu

GHK-Cu is the copper complex of the tripeptide glycyl-L-histidyl-L-lysine, first identified in human plasma. The peptide binds a Cu2+ ion through coordination bonds formed mainly by the histidine side chain and the backbone, so GHK-Cu behaves as a stable metal-peptide complex rather than free peptide mixed with free copper. Published research has examined it in fibroblast and tissue-culture models of the extracellular matrix and collagen-related proteins, and in gene-expression studies that measure how exposure changes the activity of many genes at once. Formula C14H22CuN6O4, 401.9 g/mol, CAS 89030-95-5.

Because its activity in laboratory studies is tied to the copper-bound structure, the complex is treated as the unit of study, and the product pages note that it prefers a near-neutral solution.

What is BPC-157

BPC-157 is a synthetic chain of fifteen amino acids derived from a partial sequence of a protein found in human gastric juice; the name stands for body protection compound. It is studied in peptide-signalling and angiogenesis-related models in cell cultures and animals, a preclinical literature. Formula C62H98N16O22, 1419.5 g/mol, CAS 137525-51-0. Celyfe carries it at 15mg per cartridge in the WOLVERINE, GLOW and KLOW pens.

Key differences

From products.ts, the guides and the library's classification fields:

• Length - GHK-Cu is three residues; BPC-157 is fifteen
• Origin - GHK-Cu occurs naturally in human plasma; BPC-157 is a synthetic fragment of a gastric juice protein
• Metal - GHK-Cu is a copper complex; BPC-157 carries no metal ion
• Research models - GHK-Cu: extracellular matrix, collagen and gene expression; BPC-157: peptide signalling and angiogenesis
• Mechanism label - GHK-Cu: copper-binding tripeptide studied in tissue and cellular research models; BPC-157: synthetic pentadecapeptide used in peptide-signalling research
• Amount - GHK-Cu 75mg per cartridge; BPC-157 15mg per cartridge
• Pens - GHK-Cu in GLOW and KLOW; BPC-157 in WOLVERINE, GLOW and KLOW
• Handling - the copper complex should be diluted into a near-neutral buffer rather than an acid

Which Celyfe pen carries them

The GLOW Pen carries both: GHK-Cu 75mg, BPC-157 15mg and TB-500 15mg, 105mg in a 3ml cartridge, 0.350mg per click across 300 clicks. The KLOW Pen carries the same three plus KPV 15mg, 120mg and 0.400mg per click. The WOLVERINE Pen carries BPC-157 and TB-500 without GHK-Cu. All three are on sale now, alongside the NAD+ Precision Pen.

Three compounds in one vial would mean three solubility profiles to manage at reconstitution; the Celyfe cartridge leaves the facility already in solution at a fixed composition, so every click draws the same ratio. All Celyfe pens ship pre-mixed and cold-chain, are refrigerated at 2 to 8 °C on arrival, must not be frozen. Third-party HPLC certificates are published for the NAD+ and WOLVERINE pens; GLOW and KLOW certificates are being re-issued. Every Celyfe pen is supplied and labelled for laboratory research use. Nothing on this page is guidance on use in humans or animals.

How they fit together

The GLOW product page describes the pen as three peptides acting on distinct pathways in one device: GHK-Cu contributes copper-dependent signalling, BPC-157 peptide-signalling research, and TB-500 actin-binding work. The applications listed are multi-peptide pathway-interaction studies, cytoskeletal and matrix-associated investigations, peptide-metal interaction work, and comparative analysis of individual versus combined activity. Combining them is a formulation decision, not a claim that the literature has established a combined effect.

The GLOW page links three references, including the GHK-Cu gene-data review; they are listed under sources.

Related comparisons

BPC-157 vs TB-500 covers the pair GHK-Cu is added to. WOLVERINE Pen vs GLOW Pen shows what adding GHK-Cu changes in the device, and GLOW Pen vs KLOW Pen shows what KPV adds on top.