Read the lab report, not the label.
Peptides, kratom and nootropics, written up from certificates of analysis and published studies. Where the evidence is thin, we say so.
Start here
Two entry pointsVendor rankings
Who publishes batch-specific reports, who reships, and who has been raided. Judged on the lab data, never the commission.
Sources vetted09Peptide finder
Start from a research goal, see which compounds have been studied for it, and which vetted vendors actually stock them.
Compounds indexed42Current write-up
Copper peptidesTwo copper peptides, one atom apart.
GHK-Cu flips dormant follicles back into growth phase. AHK-Cu keeps them there, shielding the new cycle from DHT-driven shortening. On paper they look like different compounds.
They are not. Both are histidine-lysine tripeptides carrying a copper ion, and the entire structural difference sits at one position on the first residue: a hydrogen in GHK, a methyl group in AHK. The drawing shows it.
- Copper ratio
- 1:1
- Stated purity
- 99% HPLC
- Key study
- Seoul Nat. Univ. 2007
- Evidence tier
- Human, limited
- Drawing
- 07-B
- Scale
- Not to scale
- Sheet
- 1 of 1
Index
The full archiveGeneral notes
How this site worksThe certificate of analysis comes first
No compound is recommended here without a batch-specific COA we can actually read. If the lab report does not exist, neither does the write-up.
Evidence tiers, stated plainly
Human trial data, animal data and anecdote are labelled as what they are. Several compounds covered here are rodent-only, because that is what the literature says.
Affiliate links, on the record
Vendor links earn a commission. They have never decided what gets covered, and vendors that lost their standing were dropped while they were still paying.
Anyone can write a review. Far fewer will show you the chromatogram.The editor
Educational content only, not medical advice. Compounds referenced are research chemicals and are not approved by the FDA for human or animal consumption. Structures shown are simplified representations for illustration. Always verify the batch report yourself before buying anything.