Pen Peptide is a UK-based vendor selling both retail and bulk quantities, with a modest catalogue of around 27 peptides and listed prices on most products. No third-party COA testing has been observed for this vendor — no published lab reports for purity, sterility, or endotoxin. Community feedback on product quality leans mixed based on 10 mentions from a single source, a limited sample that doesn't establish a clear trend.
Data last updated
Anecdotal signals
Testing coverage
We hold lab certificates for this vendor, but none of them correspond to a product currently in their catalogue — so we cannot confirm what is in any vial you could actually buy. Testing scores zero until that mapping exists. This one is on us as much as them.
Price
regional price-per-mg comparisons · 4 out-of-stock offers not shown · prices checked 2mo ago
We don't issue verdicts — we publish the evidence and let it speak. For Pen Peptide we have 10 substantiated community mentions from real, linkable sources. The sections on this page hold the evidence behind each of those numbers.
We have captured 10 substantiated community mentions of Pen Peptide across product quality (10, mixed). Each count reflects real, linkable reports — the quotes behind every number are in the community sections on this page.
16 catalogue peptides known; no COAs captured yet.