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GHK-Cu dosage calculator.
Reconstituting injectable GHK-Cu? Enter the mg in the vial, the bacteriostatic water you add, and your target dose. You get the exact concentration, the volume to draw in mL, and the units on a U-100 syringe. No rounding, no account, and the full math is shown every time.
Units shown for a U-100 insulin syringe (1 mL = 100 units). No rounding · the full math is above.
How the math works
Three steps, no hand-waving.
Reconstitution is simple arithmetic. The only thing that matters is that it is exact, and that you can see every step.
Vial mg ÷ BAC water mL = mg/mL. A 50 mg vial in 5 mL of water is 10.0000 mg/mL.
Target dose ÷ concentration = mL to draw. 2 mg ÷ 10.0000 mg/mL = 0.2000 mL.
Draw mL × 100 = units on a U-100 insulin syringe. 0.2000 mL = 20 units.
Background
What GHK-Cu reconstitution is
GHK-Cu is a copper-binding tripeptide (glycyl-L-histidyl-L-lysine bound to copper) found naturally in human plasma, first described in the 1970s for its role in collagen synthesis and tissue repair. Plasma levels fall with age. It is used both topically in cosmetics and, as a lyophilized powder, reconstituted with bacteriostatic water for injectable research use. Concentration is the mg in the vial divided by the mL of water you add. Because GHK-Cu vials are often larger (tens of mg), the draw math matters, and this calculator shows every decimal.
- Reconstitution built into the dose logger, not a separate tool
- 28-day BAC water expiry countdown per vial
- Doses remaining and refill warnings, all derived
- Local-first · no account, data stays on your device
FAQ
GHK-Cu reconstitution questions, answered.
How do you calculate a GHK-Cu dose?
Divide the mg of GHK-Cu in the vial by the mL of bacteriostatic water you add for the concentration in mg/mL. Then divide your target dose (in mg) by that concentration for the draw volume in mL, and multiply by 100 for units on a U-100 insulin syringe.
How much BAC water for a 50mg GHK-Cu vial?
There is no single correct amount. 5 mL gives 10 mg/mL; less water gives a higher concentration and a smaller draw. Enter the amount you plan to add and the calculator returns your exact numbers for any target dose.
How many units is a 2 mg GHK-Cu dose?
It depends on the concentration. At 10 mg/mL (a 50 mg vial in 5 mL), 2 mg is 0.2000 mL, or 20 units on a U-100 syringe. Change any input above to see your own numbers.
What is GHK-Cu?
GHK-Cu is the copper complex of the tripeptide glycyl-L-histidyl-L-lysine. Research has examined its effects on collagen and elastin synthesis, fibroblast activity, and wound healing. It is found naturally in human plasma.
Is injectable GHK-Cu FDA approved?
No. GHK-Cu appears in topical cosmetic products, but injectable GHK-Cu is not an FDA-approved drug. This tool is arithmetic only and is not a recommendation to use it.
Is GHK-Cu topical or injectable?
Both forms exist. Cosmetic GHK-Cu is applied to the skin; research GHK-Cu is sometimes reconstituted for injection. This calculator is for the reconstituted injectable powder, not topical serums.
How should reconstituted GHK-Cu be stored?
Follow the storage guidance for your specific product. Reconstituted peptide vials are generally refrigerated and used within a limited window. Regimio tracks a per-vial expiry countdown so you are not guessing.
Is this calculator exact?
Yes. It runs the arithmetic with no hidden rounding and shows the concentration to four decimal places, so your draw volume and units are precise.
Is this medical advice?
No. This calculator performs arithmetic on the values you enter. It does not recommend a dose, schedule, or source. Confirm anything you do with a qualified provider.
- 1Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. Int J Mol Sci. 2018;19(7):1987. doi:10.3390/ijms19071987
- 2GHK-Cu compound summary. PubChem, US National Library of Medicine
This tool performs reconstitution arithmetic only. It is not medical advice and does not recommend any compound, dose, schedule, or source. Always follow guidance from a qualified provider. See our medical disclaimer.