LearnGHK-Cu 50mg vs 100mg
Research overview
GHK-Cu 50mg vs 100mg
Glycyl-L-histidyl-L-lysine copper
Same copper peptide card, two fills. What changes between the 50mg and 100mg vials, cost per mg, and each size's lot report.
Heads up: this is product info for lab and research use only. It isn't medical advice, and it doesn't diagnose, treat, cure, or prevent any disease.
One card, two sizes
We list GHK-Cu (glycyl-L-histidyl-L-lysine bound to copper) as a lyophilized research vial in Skin & appearance. The card has a size picker with 50mg and 100mg. It's the same copper peptide in both vials. Only the amount changes.
For background on the compound, see What is GHK-Cu?. If you're weighing it against the other copper peptide we list, that's GHK-Cu vs AHK-Cu.
Cost per mg
Worked out from the current price of each size:
| Vial | Price | Per mg |
|---|---|---|
| GHK-Cu 50mg | $20.00 | $0.40/mg |
| GHK-Cu 100mg | $35.00 | $0.35/mg |
50mg vs 100mg: what actually differs
- Compound: the same. A 100mg vial is not a stronger GHK-Cu.
- Fill: 100mg holds twice the material of the 50mg.
- Cost: the larger fill costs more up front. The table above shows what each works out to per milligram today.
- Concentration: set by the volume, not the label. 50mg in 2 mL is 25 mg/mL; 100mg in 2 mL is 50 mg/mL. That's arithmetic from the reconstitution calculator, not a method.
GHK-Cu in the blends
GHK-Cu also appears inside two blends here. GLOW 70mg holds GHK-Cu 50mg with BPC-157 10mg and TB-500 10mg. KLOW 80mg adds KPV to those three. A blend is a fixed mix in one vial, not a bigger GHK-Cu size. See KLOW vs GLOW and GLOW 50mg vs 70mg.
Lot reports
Each size is third-party tested and has its own Janoshik report, so the 50mg report covers the 50mg vial and the 100mg report covers the 100mg vial. How to verify a Janoshik COA walks through checking one on the lab's own site.
- GHK-Cu 50mg COA (Janoshik) · verify
- GHK-Cu 100mg COA (Janoshik) · verify
Quick answers
Is GHK-Cu 100mg stronger than 50mg?
No. It's the same copper peptide with twice the material in the vial. Concentration depends on the volume it ends up in, not on the label size alone.
Which GHK-Cu size costs less per mg?
Usually the 100mg, but check the table on this page. It works the cost per mg out from today's prices for both sizes.
Does each GHK-Cu size have its own COA?
Yes. The 50mg and the 100mg each have their own Janoshik lot report, linked on this page and on the product page when you pick that size.
Is GHK-Cu the same as AHK-Cu?
No. They're different copper peptides with separate listings. See GHK-Cu vs AHK-Cu.
Related listings
Nearby catalog cards for what this page covers.
This is product information, not medical advice, and not a prescription. Nothing here diagnoses, treats, cures, or prevents disease. Talk with a licensed clinician before using any peptide or booster.