PeptideStackers

Vetting guide

How to spot a scam peptide vendor

'Where do I get legit peptides?' is the loudest question in the community. We don't sell them and we don't name vendors yet — but we can hand you the checklist we'd use, because almost every signal people trust can be manufactured.

What a COA does and doesn't prove

  • A Certificate of Analysis (or a purity number) can show identity and purity of a tested sample. That's it.
  • It does not prove sterility, endotoxin safety, or that the vial you received matches the one that was tested.
  • '99% pure' is used as if it settled the safety question. It doesn't — a pure, contaminated, or mislabelled-strength product can still hurt you.

The practical checklist

  • Treat glowing reviews and affiliate 'recommendations' as marketing until proven otherwise.
  • Look for independent, third-party batch testing — and understand its limits (above).
  • Move diligently, not urgently. Urgency is a sales tactic; your health isn't a flash sale.
  • For the approved medicines (semaglutide, tirzepatide), remember there's a legitimate pharmacy route via the real makers — Novo Nordisk and Eli Lilly — that skips the mystery-box problem entirely.
  • Understand the legal reality of buying at all (see our US/UK legality map).

Reliable-supplier guidance is something we're building for newsletter subscribers, carefully and with legal sign-off. Until then: vet hard, and never let a countdown timer make your health decisions.

Last reviewed: 2026-07-13