GHK-Cu 100 mg vial
How much bacteriostatic water to add to a 100 mg vial of GHK-Cu, the syringe units for each common dose, and how many doses the vial holds.
- Water
- 5 mL
- Strength
- 20 mg/mL
- Common dose
- 1 mg
- Draw
- 5 units0.05 mL
- Doses per vial
- 100
The short answer
Mixed with 5 mL of bacteriostatic water, a 100 mg vial of GHK-Cu holds 20 mg/mL. A 1 mg dose is then 5 units (0.05 mL) on a U-100 insulin syringe, and the vial holds about 100 doses of that size. Taken 1× per day, it lasts about 14 weeks.
How much water
The water only sets the strength; the dose and the number of doses in the vial stay the same. Draws are on a U-100 insulin syringe, where 1 unit is 0.01 mL.
| Water added | Strength | Per syringe unit | Draw for 1 mg |
|---|---|---|---|
| 2.5 mL | 40 mg/mL | 400 mcg | 2.5 units (0.025 mL) |
| 3 mL | 33.33 mg/mL | 333 mcg | 3 units (0.03 mL) |
| 5 mL | 20 mg/mL | 200 mcg | 5 units (0.05 mL) |
Dose chart
Syringe units for each common dose at each water volume. Select a cell to open it in the calculator.
| Dose | Water added | ||
|---|---|---|---|
| 2.5 mL | 3 mL | 5 mL | |
| 1 mg | |||
| 1.5 mg | |||
| 2 mg | |||
Draws over 100 units show in mL. Faded values are under 2 units, which is hard to measure. Check that your vial holds the larger volumes.
Where the doses come from
- Community Injection: 1–2 mg once daily, or 5 days on and 2 off.
- Community Topical: serums and creams typically run 0.2–2%, applied 1–2× daily.
Doses are what labels, trials or community reports reference, not recommendations. GHK-Cu’s page has the cycle, side effects, cautions and sources.
Mixing and storage
- PrepareLet a refrigerated vial come to room temperature, and wipe both stoppers with an alcohol swab.
- Add 5 mLDraw 5 mL of bacteriostatic water and let it run slowly down the inside wall of the vial.
- Swirl, don’t shakeSwirl gently until the powder dissolves and the liquid is clear.
- Label itWrite the date and the strength, 20 mg/mL, on the vial.
Storage: Powder: −20 °C. Mixed: 2–8 °C, protected from light.
The reconstitution guide covers each step, and the units page explains syringe markings.
Questions
How much water do I add to a 100 mg vial of GHK-Cu?
There’s no single right amount: the water only sets the strength. With 5 mL of bacteriostatic water, a 100 mg vial holds 20 mg/mL. With 2.5 mL it’s 40 mg/mL; with 3 mL it’s 33.33 mg/mL. Less liquid makes each dose a smaller draw; more makes small doses easier to measure.
How many units is 1 mg of GHK-Cu?
With 5 mL in a 100 mg vial, 1 mg is 5 units (0.05 mL) on a U-100 insulin syringe. With 2.5 mL, 2.5 units (0.025 mL); with 3 mL, 3 units (0.03 mL).
How many doses are in a 100 mg vial of GHK-Cu?
About 100 doses of 1 mg, or 66 of 1.5 mg or 50 of 2 mg. Taken 1× per day at 1 mg, it lasts about 14 weeks.
How long does a mixed vial of GHK-Cu keep?
Powder: −20 °C. Mixed: 2–8 °C, protected from light.
Other vial sizes
Sources
- Pickart & Margolina, GHK-Cu review (Int J Mol Sci 2018) PMID 29986520
The math on this page uses the doses and storage on GHK-Cu’s page.