Know who you're
buying from. Before you do.
The peptide market is largely unregulated, and the facts that matter about a vendor are scattered or missing. Vendor Intelligence gathers them into one clear assessment, with the evidence behind every line.
- 01Independent testingCertificate published; testing lab not namedPartial
- 02Ownership transparencyRegistered entity with named principalsDocumented
- 03Business historyTrading since 2021 under one nameDocumented
- 04Payment methodsLimited buyer recourse on accepted methodsPartial
- 05Regulatory historyNo public enforcement records at reviewDocumented
- 06Customer experienceRefund policy present, terms unclearPartial
- 07Review authenticityNo independently hosted reviewsNot found
- 08Marketing accuracyPreclinical findings framed as outcomesPartial
Eight signals. Every vendor. Same standard.
No single fact tells you whether a vendor deserves your trust. Together, these eight tell you a great deal, and the gaps tell you something too.
Independent testing
Third-party lab results, which lab, how recent, and whether they match your batch.
Ownership transparency
A real legal entity, a verifiable address, and people accountable for the product.
Business history
How long they have operated, and under how many names.
Payment methods
What the accepted methods say about buyer recourse.
Regulatory history
Warning letters, import alerts, and enforcement on public record.
Customer experience
Fulfillment, support, disputes, and refunds.
Review authenticity
Whether reviews live somewhere the vendor cannot edit them.
Marketing accuracy
Whether the claims match what the evidence actually shows.
No scores. Just what we found.
A single number hides the reasoning. Every signal gets a plain status and a note, so you can see exactly where a vendor stands and why.
We found clear, verifiable evidence, and we link to it.
Some evidence exists, but something important is missing, unclear, or out of date.
We looked and found nothing public. An absence of evidence is worth knowing about.
What an assessment is, and what it isn't.
It is
- A record of what is publicly verifiable about how a vendor does business
- Dated, so you know how current it is
- Sourced, with the evidence linked wherever it exists
- Corrected openly when we get something wrong
It isn't
- A judgment on the safety, purity, or legality of any product
- Our own lab testing. We report what vendors and third-party labs publish, and say which
- A guarantee. One certificate covers one batch, and public records are incomplete
- A recommendation to buy anything
Peptides sold by these vendors are generally marketed for research use only and are not approved by the FDA for human use. Nothing here encourages their use. Consult a licensed healthcare provider for clinical decisions.
Vendors can't pay to be included, to change an assessment, or to disappear from one. That isn't a policy. It's the product.
PepSense does not sell, manufacture, or distribute peptide compounds, and has no commercial relationships with the vendors it assesses. If that ever changes, we will disclose it on the assessment and on this page.
See something we got wrong?
Vendors and readers can send corrections. We review the evidence, update what warrants it, and note that it changed.
Send a correction