Quick math example
A 50 mg vial mixed with 5 mL gives 10 mg/mL. A 2 mg dose is 0.2 mL, which equals 20 units on a U-100 syringe.
How the GHK-Cu calculation works
GHK-Cu is labelled in milligrams per vial. Concentration is the total mg divided by BAC water volume, and per-dose volume is your target divided by that concentration.
Larger vials are common for GHK-Cu because of its broader use in cosmetic and topical formulations; the calculator math handles the higher mg amounts the same way.
- 50 mg vial = 50,000 mcg total
- 50,000 mcg / 5 mL = 10,000 mcg per mL
- 2,000 mcg target = 0.2 mL draw
Topical vs injectable framing
Topical GHK-Cu products are typically pre-formulated and do not require this math. The calculator is intended for situations where you are reconstituting a lyophilized vial yourself.
Frequently asked questions
Is GHK-Cu approved as a medicine?+
GHK-Cu appears in approved cosmetic ingredients in many regions, but injectable use is treated differently. This page only explains calculator math and does not make treatment recommendations.
How do I handle a 100 mg GHK-Cu vial?+
Enter 100 mg as the vial amount and your actual BAC water volume. Concentration scales linearly, so a 100 mg vial in 5 mL gives 20 mg/mL.
Can the calculator tell me how to use GHK-Cu topically?+
No. Topical formulations are pre-mixed and use percentage strength rather than mg/mL concentration. The calculator is for liquid reconstitution from a lyophilized vial.