Peptide handling
GHK-Cu reconstitution calculator
Reconstitution calculator for GHK-Cu, prefilled for its 50 and 100 mg vials. Get the concentration, the dose volume and the U-100 syringe reading.
Start from a compound
Fills the vial size and a starting water volume. Only compounds with a citable range fill a dose.
The second is the question asked once the syringe is already filled, or when checking a vial someone else reconstituted.
1 mg = 1,000 mcg. Published figures are usually micrograms; vial labels are milligrams.
- Draw to
- 4 unitson a U-100 syringe
- Dose
- 1000 mcg
- Dose volume
- 0.04 mL
- Concentration
- 25 mg/mL
- Per unit
- 250 mcg
- Doses per vial
- 50whole doses; a partial one is not counted
Shown on a 30-unit (0.3 mL) U-100 syringe, the smallest that holds this draw.
GHK-Cu — Limited human data
From human studies that are small, early-phase, or for a different indication than the one this range is usually cited for. The prefilled dose is the low end of that range, daily, over a 4-8 week cycle depending on dose tier.
Vial size and water volume are a starting point for the arithmetic, not a recommendation.
Adding more water makes the same dose a larger, easier-to-read mark on the syringe. It does not change how many doses the vial holds.
Vial sizes and starting volume
GHK-Cu is commonly supplied in 50 mg and 100 mg vials. The calculator opens on a 50 mg vial with 2 mL of bacteriostatic water — a starting point for the arithmetic, not a recommendation. Change either and everything recalculates.
That combination gives 25 mg/mL, so one insulin unit holds 250 mcg and a 1000 mcg dose is 4 units.
What dose to enter
A range of 1000–2000 mcg per dose can be cited for GHK-Cu, daily, over a 4-8 week cycle depending on dose tier. The dose field opens at the low end of it.
Limited human data
From human studies that are small, early-phase, or for a different indication than the one this range is usually cited for.
- Leyden 2002 photoaging trial — Human photoaging trial. The one human study behind this compound's tier. It is topical cosmetic use, not injectable, so it does not itself establish the injectable schedule above.
- Pharmaceutical Strategies for the Topical Dermal Delivery of Peptides/Proteins for Cosmetic and Therapeutic Applications. — Delivery-methods review. Reviews topical delivery methods; not a dosing study.
- The human tri-peptide GHK and tissue remodeling (review of preclinical wound-healing data across rats, mice, rabbits, and pigs). — Preclinical review. Reviews animal wound-healing data only; establishes mechanism, not a human dose.
Related
- GHK-Cu — the product page, with its current batch.
- Bacteriostatic water — what goes in the vial.
- Peptide reconstitution calculator — the general version, with the blend and half-life calculators alongside it.
- Dosing reference — published schedules, each with the evidence behind it.
For research use only. This tool performs arithmetic on figures you supply — it is not medical guidance and does not recommend a dose for any compound.