Penguin Peptides GHK-Cu price: $0.74/mg
Penguin Peptides lists GHK-Cu at $74 for 100 mg, which is $0.74/mg; that's #7 cheapest of 11 vendors we track after codes (median $0.80/mg), checked Oct 21, 2026.
Our verdict on Penguin Peptides
Real store, testing gaps
74/100B
#3 of 11 ranked vendors
- Publishes COAs; lot matching unconfirmed
- Named lab: Northline Analytical (Denver, CO)
- 56% of 9 independent tests passed
Last verified How we scoreFull review
Penguin Peptides GHK-Cu sizes
GHK-Cu at every vendor, after codes
| Vendor | Cheapest vial | Per mg | After code | Score |
|---|---|---|---|---|
| Atomik Labz | 100 mg · $55 | $0.55 | $0.47 | 50 |
| Ascension Peptides | 100 mg · $59 | $0.59 | $0.59 | 70 |
| True Peptides | 50 mg · $40 | $0.80 | $0.80 | 75 |
| Core Research Peptides | 50 mg · $42 | $0.84 | $0.84 | 60 |
| 99 Purity Peptides | 50 mg · $49.99 | $1.00 | $0.85 | 60 |
| DRYPtides | 50 mg · $49 | $0.98 | $0.98 | 65 |
| Penguin Peptides | 50 mg · $54 | $1.08 | $1.08 | 74 |
| Core Peptides | 50 mg · $58 | $1.16 | $1.16 | 83 |
| Biotech Peptides | 50 mg · $64 | $1.28 | $1.28 | 70 |
| Swiss Chems | 10 mg · $24.70 | $2.47 | $2.22 | 70 |
| Spartan Peptides | 50 mg · $179 | $3.58 | $3.58 | 60 |
Codes applied only where verified, same math for every vendor. All GHK-Cu sizes.
DRYPtides lists GHK-Cu at $0.54/mg and scores 65/100. It's the vendor we plan to partner with.
A tripeptide (glycyl-histidyl-lysine) complexed with copper(II). Penguin Peptides review · Penguin Peptides coupon code
Questions
How much is GHK-Cu at Penguin Peptides?
Penguin Peptides lists GHK-Cu at $74 for 100 mg, which is $0.74/mg; that's #7 cheapest of 11 vendors we track after codes (median $0.80/mg), checked Oct 21, 2026.
Is Penguin Peptides GHK-Cu cheaper than other vendors?
After codes, Penguin Peptides is #7 of 11. The cheapest is Atomik Labz at $0.47/mg.
Is there a Penguin Peptides code for GHK-Cu?
We hold no verified percentage code for Penguin Peptides.
Does Penguin Peptides publish a COA for GHK-Cu?
Penguin Peptides's COA practice: 25/40 on our COA transparency line. Check the COA library link on its review page and ask for the COA matching your lot.