GHK-Cu: which line to draw to

Enter your GHK-Cu vial amount, the water you added and your dose. GHK-Cu is dosed in mcg; the syringe shows exactly where to stop. New to this?

Your line shows up here.

Fill in the vial, water and dose boxes.

Limited human evidence. Human data is mostly for skin creams; injected use is not well studied.

In the vial

mg

Water added

mL

Your dose

mgmcg

Syringe

What do these boxes mean?

In the vial: The amount of powder in the vial before you add anything, e.g. “5 mg”. It’s on the label or the box.
Water added: How much bacteriostatic water you mixed in. It doesn’t change how much peptide you get, only how strong the mix is. More water makes each dose a bigger amount that’s easier to measure.
Your dose: How much peptide you want per injection, from your prescription or plan. Not the number of units on the syringe; that’s what we work out.
Syringe: Check the packet: 1 mL, 0.5 mL or 0.3 mL (sometimes written 100, 50 or 30 units). All are U-100: 100 units is 1 mL. Smaller syringes measure small doses more accurately.

When does this vial expire?

Mixed on

Good for (days)

GHK-Cu at a glance

Evidence: Limited human evidence. Human data is mostly for skin creams; injected use is not well studied.
Vial sizes: 5, 10, 50, 100 mg
Usual dose range: 200–2,000 mcg
How often: Daily
Unmixed: Freezer −20°C
After mixing: Fridge 2–8°C, use within 28 days

GHK-Cu units to mcg chart

Syringe units on any U-100 insulin syringe (100 units = 1 mL), worked out by the same engine as the calculator. Your own vial and water may differ: use the calculator for your numbers.

5 mg vial + 2 mL water (2,500 mcg per mL)
Dose	Units	mL
200 mcg	8	0.08
500 mcg	20	0.2
1,000 mcg	40	0.4
2,000 mcg	80	0.8

10 mg vial + 3 mL water (3,333 mcg per mL)
Dose	Units	mL
200 mcg	6	0.06
500 mcg	15	0.15
1,000 mcg	30	0.3
2,000 mcg	60	0.6

50 mg vial + 5 mL water (10,000 mcg per mL)
Dose	Units	mL
200 mcg	2	0.02
500 mcg	5	0.05
1,000 mcg	10	0.1
2,000 mcg	20	0.2

100 mg vial + 10 mL water (10,000 mcg per mL)
Dose	Units	mL
200 mcg	2	0.02
500 mcg	5	0.05
1,000 mcg	10	0.1
2,000 mcg	20	0.2

GHK-Cu questions

How many units is 200 mcg of GHK-Cu?

With a 5 mg vial mixed with 2 mL of bacteriostatic water, 200 mcg is 8 units (0.08 mL) on a U-100 insulin syringe. A different vial size or amount of water changes this, so check it with your own numbers.

How much water do I add to a 5 mg GHK-Cu vial?

2 mL of bacteriostatic water is common, which makes 2,500 mcg per mL. More water makes each dose a bigger amount that is easier to measure; it doesn't change how much is in the vial.

How long does mixed GHK-Cu last?

Once mixed, keep it at fridge temperature, 2–8°C and use it within 28 days. Unmixed powder: freezer −20°c.

What is GHK-Cu?

GHK-Cu is a small copper-binding peptide found naturally in blood, saliva and urine, and its levels fall with age. It’s best known as an ingredient in skin creams.

What the research shows

Human evidence is mostly for creams on the skin, where it’s linked to firmer skin and better wound healing. Lab studies show it switches many genes on and off, but injected GHK-Cu hasn’t been properly studied in people.

Large vials

GHK-Cu comes in big vials, up to 100 mg, that get punctured many times. Every puncture is a contamination risk; splitting a large vial into smaller sterile vials limits that. Doses are quoted in micrograms.

Sources

Pickart L et al. GHK peptide as a natural modulator of multiple cellular pathways. Biomed Res Int, 2015.