To work out the syringe units for GHK-Cu, you need two numbers: the milligrams (mg) in your vial and the amount of liquid (in mL) you added to it. From those, the calculator finds the concentration, and then how many units a given amount works out to. This is a mixing-math tool, not a dosage calculator — it does not recommend a dose. GHK-Cu is not an FDA-approved drug, so any amount discussed here is an educational example of the arithmetic only. Confirm everything with your physician or pharmacist.
GHK-Cu is a small copper tripeptide (glycyl-L-histidyl-L-lysine bound to copper) that is used cosmetically and in research settings. It is not approved by the FDA as a drug. Because of that, there is no official, FDA-sanctioned dose for it the way there is for an approved prescription medicine. This page exists only to explain the mixing arithmetic — how to convert a vial of powder plus a measured liquid into syringe units. It is educational and is not a recommendation to use GHK-Cu or any other compound. If you are considering it, that is a conversation for your physician.
This is the part people most often get wrong with copper peptides. GHK-Cu is commonly reconstituted with a dilute acetic acid solution (for example, around 0.6%) rather than plain bacteriostatic water. The reason is chemistry: the copper complex needs a low (acidic) pH to stay stable, and a more neutral diluent like plain bac water can make it less stable. Many other peptides do use bacteriostatic water — but GHK-Cu is a common exception.
One important point for the math: which diluent you use does not change the concentration calculation. Whether you add acetic acid solution or water, 1 mL is still 1 mL. The diluent choice matters for stability and is something to confirm with your pharmacist; the arithmetic below treats the liquid simply as the volume you added.
There are two steps. First find the concentration, then convert an amount into units on a standard U-100 insulin syringe (where the whole 1 mL barrel is marked as 100 units).
Remember the unit conversion: 1 mg = 1000 mcg.
These are examples of the arithmetic only — your vial may differ, and these are not recommendations. Confirm everything with your pharmacist.
Example 1 — a 50 mg vial with 5 mL of diluent. Concentration = 50 × 1000 ÷ 5 = 10,000 mcg/mL. If someone were measuring out an example amount of 1000 mcg, the math would be 1000 ÷ 10,000 × 100 = 10 units on a U-100 syringe.
Example 2 — a 50 mg vial with 2 mL of diluent. Concentration = 50 × 1000 ÷ 2 = 25,000 mcg/mL. For the same example 1000 mcg, the math would be 1000 ÷ 25,000 × 100 = 4 units.
Notice that the same example amount gives a different number of units depending only on how much liquid was added. That is the whole point of doing the math against your own vial: a unit count from someone else's mixing is meaningless unless their vial mg and diluent volume match yours exactly.
This tool does arithmetic — it cannot tell you whether a compound is appropriate, safe, or legal for you, and it never selects or endorses an amount. GHK-Cu is not FDA-approved as a drug. Always double-check every number against your own vial and your pharmacist's guidance, and watch the units-versus-mcg-versus-mg conversion closely, since a single mistake there can be a 10× or 100× error.
If you are dealing with a prescription medicine (for example, a GLP-1 weight-loss drug), do not use a general page like this to figure out amounts — follow your prescriber's instructions exactly, and see Pepathary's dedicated GLP-1 guide for that topic rather than any schedule here.
It depends entirely on your concentration, so there is no single answer. 1 mg is 1000 mcg. If your vial works out to 10,000 mcg/mL (for example, 50 mg in 5 mL), then 1000 mcg would be 10 units on a U-100 syringe. With a different vial size or diluent volume the units change. This is example arithmetic, not a recommendation — confirm with your physician or pharmacist.
There is no single correct amount, and GHK-Cu is a special case: it is commonly reconstituted with dilute acetic acid rather than plain bacteriostatic water, because the copper complex needs a low pH to stay stable. The volume of liquid you add simply sets the concentration — more liquid means a more dilute solution and a higher unit count for the same amount. The choice of diluent and volume is something to confirm with your pharmacist; this page only explains the math.
No. GHK-Cu is a copper tripeptide used cosmetically and in research; it is not approved by the FDA as a drug. Because of that there is no official FDA dose for it. This page is educational and does not recommend using GHK-Cu — that decision belongs with your physician.
No. The diluent choice (acetic acid solution versus bacteriostatic water) affects the stability and pH of the solution, not the concentration math. One milliliter is one milliliter either way, so the units-to-draw calculation is the same. The reason acetic acid is commonly used for GHK-Cu is the copper complex's need for a low pH — a stability matter to confirm with your pharmacist, not a math one.