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To convert GHK-Cu into syringe units, divide your chosen dose (mg) by the vial’s concentration (mg/mL), then multiply by 100 for a U-100 syringe. Concentration = vial mg divided by bacteriostatic water mL. GHK-Cu has no established injectable dose, so you supply your own value. This is arithmetic, not medical advice — verify with a licensed clinician.
GHK-Cu reconstitution & dosage calculator X
Reconstitution / draw volume / syringe units / supply-chain
Arithmetic checks out. Confirm clinically, against the label, and against the actual vial before any use.
Independent check - dose mg / concentration mg/mL = volume. U-100 units = mL x 100.
No clinically validated injectable dose identified
No established dose - enter only protocol or prescriber values.
No default dose; calculator accepts manual protocol inputs only.
Topical/cosmetic evidence must not be extrapolated to injection; FDA notes aggregation, impurities and immunogenicity concerns.
U.S. Food & Drug Administration - fda.govSupply-chain signal only - not a potency guarantee. Enter the COA's tested mg and purity above so the math reflects the real vial.
View on finnrick.comReverse: pick a dose and the units you want it to read, then calculate diluent to add.
Same-syringe co-draw. Reconstitute each peptide in its own vial, then draw them into one syringe.
- Reconstitute each peptide in its own vial — never add water to multiple peptides in one vial.
- Only co-draw peptides with the same diluent (e.g. both bacteriostatic water) and compatible pH.
- Draw and inject fresh — do not pre-mix and store; mixture stability is not established.
- No blended stack is clinically validated. Verify each component and confirm with a clinician.
GHK-Cu concentration and syringe-unit conversion chart
| Vial + water | Concentration | Units per 1 mg | Units per 100 mcg |
|---|---|---|---|
| 50 mg + 1 mL | 50 mg/mL | 2 | 0.2 |
| 50 mg + 2 mL | 25 mg/mL | 4 | 0.4 |
| 50 mg + 3 mL | 16.67 mg/mL | 6 | 0.6 |
| 100 mg + 1 mL | 100 mg/mL | 1 | 0.1 |
| 100 mg + 2 mL | 50 mg/mL | 2 | 0.2 |
| 100 mg + 3 mL | 33.33 mg/mL | 3 | 0.3 |
Concentration = vial strength divided by the bacteriostatic water added. On a U-100 syringe 100 units = 1 mL, so units = (dose divided by concentration) x 100. Values are syringe units, not milligrams. Amber values exceed 100 units, which is more than one standard 1 mL U-100 syringe holds, so that combination needs a more concentrated solution. No established dose exists for GHK-Cu, so this chart deliberately shows conversion factors only and does not suggest a dose. Multiply the units-per-1-mg figure by your own dose in milligrams to convert any amount. For vial sizes or doses not shown here, use the general mg to units converter.
Sources
- U.S. Food & Drug Administration - fda.govLimited human topical data; no validated injectable dose. Basis for the regulatory status, route, frequency and published range shown on this page, and for the conversion factors in the chart above. Source last checked 2026-06-24
Frequently asked questions
Does topical GHK-Cu evidence tell me anything about an injection dose?
No. GHK-Cu is used topically as a cosmetic copper peptide applied to skin, but that route, exposure, and formulation are entirely different from an injection. There is no clinically validated injectable dose, and topical or cosmetic data cannot be extrapolated to reconstituted injection. This tool only converts a milligram figure you already have into U-100 syringe units; it does not translate skincare findings into a dose.
GHK-Cu vials are often 50 or 100 mg, larger than most peptides. What does that mean for the math?
Common GHK-Cu vials hold 50 or 100 mg, which is a large amount of peptide compared with many research peptides. On this page the vial strength and the volume of reconstitution fluid you enter set the concentration, and a larger total mg in the vial means each U-100 unit carries more peptide unless you add more diluent. The calculator reflects whatever numbers you input; it does not endorse a fill volume or a per-dose amount.
Is there any approved or established self-use amount of injectable GHK-Cu?
There is not. GHK-Cu is classified as not established for injection, with no FDA-approved injectable product and only limited injectable safety data. This calculator performs arithmetic only, converting milligrams to U-100 units, and it is not medical advice and never suggests an amount to inject. Because no injectable dose has been validated, any figure would have to come from a qualified clinician who is directing your care.
What safety concerns apply specifically to injecting a copper peptide like GHK-Cu?
The FDA has flagged concerns for injectable GHK-Cu including aggregation, impurity, and immunogenicity, which are distinct from how the peptide behaves on skin. As a copper-containing peptide, purity and formulation quality also matter. These are reasons the injectable route lacks validated dosing. The calculator does no safety screening; it only reflects the mg and volume you enter and cannot assess a product’s identity or quality.
The units this tool shows are so much bigger than for a typical peptide. Is that a mistake?
Not necessarily. Because GHK-Cu vials commonly contain 50 or 100 mg, the concentration and resulting U-100 unit counts can look far larger than for a low-milligram peptide at the same diluent volume. That is a property of the numbers you entered, not a recommendation. If a result looks surprising, recheck the vial mg and the fluid volume rather than assuming the large figure implies a safe or intended amount.