GHK-Cu 100 mg peptide pen
The same copper tripeptide, three-and-a-third times the content, at well under half the price per milligram, the unit for protocols that actually consume material.
- ISO-certified laboratory
- COA per batch, ≥99% HPLC
- Discreet dispatch within 24 h
- Research use only
Volume economics, identical material
One hundred milligrams of Gly-His-Lys:Cu from the same synthesis standard and the same release testing as the 30 mg unit, the difference is arithmetic, not chemistry. At €260 against €116, the large pen carries roughly 2.6 euro per milligram against the small unit’s 3.9.
That economy only pays if the material gets used: an opened cartridge runs on the refrigerated clock regardless of how much remains. Size the unit to the protocol, not to the discount, advice that costs us revenue and belongs on the page anyway.
| Compound | GHK-Cu |
| Content | 100 mg, pre-filled |
| Sequence | Gly-His-Lys : Cu(II) |
| Purity | ≥ 99% (HPLC) |
| Per-mg price | ± € 2.60 |
| Storage | Refrigerate; protect from light |
| Category | Research use only |
Same batch standard as the 30 mg pen, the certificate route is identical.
Before the GHK-Cu 100 mg peptide pen reaches the bench
Large cartridge, same clock: the storage pages matter more here, not less.
Anchor of the skin shelf, among smaller neighbours
The bulk unit’s real context is the shelf it anchors, read it against the compounds standing beside it.
On the skin shelf the ghk-cu 100 mg pen is the anchor, the one protocols on that shelf keep returning to. Its neighbours frame it by contrast. KPV sits beside it as another short peptide aimed at skin questions, but without the copper complex that defines this compound; follistatin-344, three milligrams in its own pen, marks the opposite end of the content scale. Among them the large unit is the workhorse, not the specialist.
Its nearest neighbour is its own smaller sibling: the thirty-milligram unit is the identical material, so the choice between them is one of shelf logistics, not chemistry. What sets the whole GHK-Cu pair apart from the copper-free peptides around it is that blue complex, and with it a shared handling rule, refrigerated and shielded from light. On a shelf of dermal compounds, this is the one whose colour tells you, at a glance, whether storage has held.
From the thread, to the protocol
Anecdote and protocol ask different questions of the same compound, and the move between them is where most claims thin out.
GHK-Cu attracts a large volume of enthusiastic first-person reporting, most of it about skin and hair, almost none of it controlled. Two better starting points are the GHK-Cu compound page and the PubChem entry for the copper complex. Moving those claims to the bench means changing the questions asked. A forum post records an impression; a protocol records a measured endpoint against a baseline, with a control that did not receive the compound and, ideally, an observer who does not know which sample is which. Under that discipline, the vivid before-and-after collapses into a number that either moves or does not.
The second change is quieter but decisive: controlled work starts by knowing what the material is, where a forum claim rarely does. Most anecdotes attach to material of unknown identity and purity. A documented batch, released the way the quality page describes, removes that variable, so any effect you record can be tied to a defined copper tripeptide at a known concentration. The larger unit helps only in supplying enough material for the replicates and dose ranges such work needs, the reason to size up is method, not enthusiasm.
Sizing alternatives
The smaller GHK-Cu unit, and the catalogue’s other end of the content scale.
The science behind GHK-Cu
Same three pages as the small unit, the compound does not change with the size.
Questions about the GHK-Cu 100 mg peptide pen
The large-unit questions.