GHK-Cu peptide calculator
A 50 mg GHK-Cu vial mixed with 5 ml of bacteriostatic water holds 10 mg/ml. A 2 mg dose is 0.20 ml — 20 units on a U-100 insulin syringe — and the vial holds 25 doses of that size.
GHK-Cu dosage chart: units to draw
Units on a U-100 insulin syringe (100 units = 1 ml) for GHK-Cu doses from 1 mg to 3 mg, by how much bacteriostatic water is in a 50 mg vial. The highlighted row is the 2 mg dose used above.
| Dose | 2.5 ml water 20 mg/ml | 5 ml water 10 mg/ml | 7.5 ml water 6.67 mg/ml | Doses per vial |
|---|---|---|---|---|
| 1 mg | 5 u 0.050 ml | 10 u 0.10 ml | 15 u 0.15 ml | 50 |
| 2 mg | 10 u 0.10 ml | 20 u 0.20 ml | 30 u 0.30 ml | 25 |
| 3 mg | 15 u 0.15 ml | 30 u 0.30 ml | 45 u 0.45 ml | 16 |
A 20-unit draw fits comfortably on a 0.3 ml insulin syringe (30-unit capacity), whose 1-unit (often half-unit) markings are easier to read than the 2-unit ticks on a 1 ml syringe.
Unit math only, not a dosing recommendation. The dose range is what published protocols and trials describe; see the GHK-Cu guide for sources.
How to reconstitute GHK-Cu
- Wipe both vial stoppers with a fresh alcohol swab and let them dry.
- Draw 5 ml of bacteriostatic water into a syringe.
- Insert the needle at an angle into the GHK-Cu vial and let the water run slowly down the inner wall — do not inject directly onto the powder.
- Do not shake. Gently swirl the vial until the peptide fully dissolves.
- Storage for GHK-Cu: Lyophilized refrigerated. Reconstituted: refrigerated, use within 28 days.
- For a 2 mg dose, draw to the 20-unit mark (0.20 ml) on a U-100 insulin syringe.
About GHK-Cu
GHK-Cu is a naturally occurring copper-binding tripeptide with well-studied effects on collagen synthesis, wound healing, and hair follicle stimulation. Widely used topically; injectable use is research-only.
Half-life: Approximately 0.5–1 hour systemically
Typical dose range: 1–3 mg per injection; topical concentrations vary
Class: Copper-binding tripeptide
Regulatory status: Used in cosmetic formulations (topical). Not FDA approved as an injectable drug.
Read the full GHK-Cu guide → — mechanism, side effects, storage, regulatory status and citations. Or browse the whole peptide glossary.
Other tools for GHK-Cu
Calculators for related peptides: BPC-157, TB-500.
Need a different unit or a different question? The peptide dose converter moves a dose between mcg, mg and IU, and the GHK-Cu half-life chart shows how concentration accumulates across a dosing cadence. Loading GHK-Cu into a reusable 3 ml pen instead of drawing it with a syringe? The peptide pen calculator turns the same vial into mcg per click and clicks to dial. All of them are listed on the free peptide tools page.
GHK-Cu calculator FAQ
Is this a GHK-Cu peptide calculator or a reconstitution calculator?
Both. This GHK-Cu calculator converts vial strength, bacteriostatic-water volume, and target dose into milliliters and insulin-syringe units. It does not recommend a medical dose.
How much bacteriostatic water for a 50 mg GHK-Cu vial?
This page is pre-filled with 5 ml of bacteriostatic water for a 50 mg GHK-Cu vial because that is a common research ratio. You can adjust the water amount in the full calculator.
How many units is a 2 mg GHK-Cu dose?
20 units on a U-100 insulin syringe, when a 50 mg vial is mixed with 5 ml of bacteriostatic water (10 mg/ml). That is 0.20 ml. With a different amount of water the unit count changes — the dose chart on this page lists 2.5 ml, 5 ml, 7.5 ml mixes.
How many doses are in a 50 mg GHK-Cu vial?
25 doses of 2 mg. The number of doses depends only on vial strength and dose size — adding more or less water changes the volume of each draw, not how many draws the vial holds.
Does this GHK-Cu dosage calculator give medical advice?
No. It only performs unit math. Dosing, titration, and whether GHK-Cu is appropriate are clinical decisions that should be made with a licensed healthcare professional.
Skip the math — let the app handle it
Peptide Protocol remembers your GHK-Cu vial, shows the units for every dose, tracks what is left, and rotates injection sites for you.
Get the iPhone app →Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.