Peptides / Dosing explainer

GHK-Cu dosage: the copper peptide behind the numbers

GHK-Cu turns up in two very different places: skin-care formulations and injectable research vials. The cited evidence establishes no injected amount for people: the review the library cites covers cell, animal and topical cosmetic work, and injected human data are scarce [1]. This page keeps that answer apart from the vial arithmetic a 50 mg injectable package needs and from how entries are logged.

Editorial still life from the PinPoint compound library series

ILLUSTRATION / COMPOUND LIBRARY SERIES

What is GHK-Cu, and what does a GHK-Cu dosage search ask?

GHK is the tripeptide glycyl-L-histidyl-L-lysine, and GHK-Cu is its complex with a copper ion [1]. GHK occurs naturally in human plasma, saliva and urine, and its concentration in plasma falls with age, according to the review the library cites. PinPoint lists GHK-Cu as limited human research, logged by subcutaneous or topical route, with a half-hour low-confidence half-life input and a 50 mg package example [2].

A search for ghkcu injection or ghk cu dosage asks for a milligram figure. The two routes do not share one. Topical products state a percentage or a concentration of a cream or serum; injectable research vials state a powder total. Only the second involves syringe units, and only the first has a meaningful body of human cosmetic studies behind it.

What does the research on GHK-Cu report?

The 2015 review describes GHK-Cu as a modulator of many cellular pathways in skin regeneration [1]. It summarises laboratory work in which GHK influenced collagen and glycosaminoglycan synthesis, wound contraction and blood-vessel growth in animal wound models, and gene-expression analyses suggesting the peptide shifts the activity of a large number of human genes in cell data sets.

The human evidence it discusses is largely cosmetic and topical, such as creams applied to facial skin and assessed for appearance measures [1]. Injected human data are scarce. The library reflects that by labeling the entry limited human research and by marking the half-hour model input as an estimate rather than a measured human value [2].

None of this establishes an injectable amount for people. A review of mechanisms and topical cosmetics can say what GHK-Cu has been tested for; it cannot be read backward into a schedule for a subcutaneous vial.

Library record for this compound
CompoundStatusHalf-life inputPackage example
GHK-CuLimited human research, estimated model data0.5 h50 mg (vendor listing)

How do you convert a 50 mg GHK-Cu vial to mL and units?

Fifty milligrams is ten times the library's 5 mg BPC-157 example, so the final volume moves the syringe marks further [2]. Divided into a hypothetical 5 mL final volume, it gives 10 mg/mL; each U-100 unit is then 0.1 mg, and 1 mg occupies 0.1 mL, or 10 units [3]. Divided into 2 mL instead, it gives 25 mg/mL, where 1 mg is just 4 units, a short and hard-to-read distance on a syringe.

The 1 mg row is a round fiftieth of the vial, chosen to show the scale. The GHK-Cu dosing chart lays the same vial out across 1, 2 and 3 mL, and the GHK-Cu calculator takes your own vial and volume. Topical products need no conversion of this kind; their strength is printed as a percentage on the container.

50 mg ÷ 5 mL = 10 mg/mL; 1 unit = 0.1 mg
1 mg ÷ 10 mg/mL = 0.1 mL = 10 units
50 mg ÷ 2 mL = 25 mg/mL; 1 mg = 4 units
GHK-Cu: 50 mg in 5 mL, worked to U-100 units50 mg divided by 5 mL is 10 mg per mL. 1 mg is 0.1 mL, or 10 U-100 units. Arithmetic, not a dose. GHK-CU: 50 MG IN 5 ML, WORKED TO U-100 UNITS 50 mg vial + 5 mL = 10 mg/mL 1 mg ÷ 10 mg/mL = 0.1 mL = 10 units 0102030405060708090100 U-100 SCALE, 1 mL = 100 UNITS
Arithmetic illustration from stated inputs. Not a dose or a measured level.

How do people log GHK-Cu in PinPoint?

PinPoint records injection and topical routes in the same library, so a GHK-Cu entry carries its route along with compound, dose and, for injections, site and pain level [4][2]. For a vial, the setup screen takes the 50 mg size and water volume and returns concentration and syringe units, with a fill-line guide for 0.3, 0.5 and 1.0 mL syringes [4].

Daily or custom schedules carry reminders at the chosen time [4]. Because the half-life input is half an hour, the Home curve shows each injected entry as a brief rise; that line is a mathematical visualization of an estimated input, not a published average, and does not describe skin or tissue levels [4][2].

Get PinPoint on the App Store

What do people ask about GHK-Cu dosage?

What is GHK in GHK-Cu?
GHK is the tripeptide glycyl-L-histidyl-L-lysine. GHK-Cu is that tripeptide bound to a copper ion. GHK occurs naturally in human plasma, and its level falls with age according to the cited review.
How many units is 1 mg of GHK-Cu?
It depends on the final volume. A 50 mg vial in 5 mL holds 10 mg/mL, so 1 mg is 10 U-100 units. The same vial in 2 mL holds 25 mg/mL, so 1 mg is 4 units.
Is GHK-Cu injection studied in people?
The cited review covers mostly cell, animal and topical cosmetic research. Injected human data are scarce, which is why the library labels the entry limited human research.
Does the topical GHK-Cu percentage convert to syringe units?
No. A cream or serum lists a percentage or concentration of the product, while an injectable vial lists a powder total. Only the vial goes through reconstitution and syringe-unit arithmetic.

Where do these facts come from?

Sources are listed by kind: labels first, then peer-reviewed papers, then PinPoint's own library, arithmetic and app description. Library values were retrieved from the PinPoint application on 5 October 2026; vendor listings support package sizes only.

  1. GHK peptide as a modulator of skin regeneration pathways, 2015Biomed Res Int, 2015 (PubMed 26236730). Review of GHK and its copper complex.Retrieved 2026-10-05 · review
  2. PinPoint compound library, application recordsHalf-life inputs, routes, frequencies, package examples and confidence labels as stored in the iOS app library and mirrored in the peptide guides.Retrieved 2026-10-05 · library
  3. Unit conversion arithmeticConcentration = amount / volume; volume = amount / concentration; U-100 units = mL x 100; remaining fraction = 2^(-elapsed / half-life).Retrieved 2026-10-05 · arithmetic
  4. PinPoint App Store descriptionFeature wording from the approved application description, not pricing.Retrieved 2026-10-05 · app-description