49 suppliers rated31 with public certificates7 FDA warning letters trackedUpdated October 2026 · How ratings work
Rated Peptides

Get in touch

Write to [email protected]. If you are reporting a mistake, paste the link to the page on the supplier's site that shows the right information and we can act on it straight away.

Things we fix fast

  • A supplier has shut down, moved to a new domain, or received a regulator's letter.
  • A line on a fact sheet is wrong and the supplier's own page proves it.
  • A supplier that sells research peptides and posts certificates is not in our table yet.

Things we will say no to

Changing a rating on request, removing an accurate negative fact, or adding a supplier that publishes no testing at all. If you work for a supplier, you are welcome to write; just say so in your first line.