Open the compound’s page (for example /p/bpc-157/) or the Peptides. Every listing is normalized to a single price-per-milligram ($/mg) figure and sorted cheapest first, so the lowest $/mg is at the top. Prices are the publicly listed vendor prices, ex-shipping, updated nightly, and each compound page also shows the full nightly $/mg history so you can tell whether today’s price is high or low.
Each vendor’s trust profile shows the operating entity we could tie to that storefront from the public record — the registered LLC or Inc., its type and state, and a Verify link to the source filing (state business registry, USPTO trademark, or other public record). Many peptide storefronts operate anonymously; when we cannot resolve a legal entity we say so plainly, which is a neutral factor that lowers confidence, not an accusation.
A trust tier is a public-record transparency signal, not an endorsement or a safety verdict.
No. A tier only reflects how much of the public record we could resolve for a storefront (legal entity, domain age, trademark ownership, BBB listing, enforcement screen). It is not an endorsement, a recommendation to purchase, or a claim about product safety, quality, or efficacy. All signals are preliminary and have not been independently verified, and everything on the site is for research use only, not medical advice.
The Peptide Index does not certify any vendor as “legit,” safe, or a good place to buy — that is not something a public-record index can verify. What it can do is show you the paper trail: open the vendor’s trust profile to see whether a real legal entity resolves behind the storefront (with a Verify link to the source filing), how old the domain is, whether there is a BBB listing, and whether any FDA warning-letter or public enforcement item is on file. A storefront that operates anonymously, or one with an enforcement item on record, is a factor that lowers confidence — not proof of wrongdoing. Read the signals, follow each Verify link to the primary source, and draw your own conclusion. Everything is preliminary, not independently verified, and for research use only.
Yes. The Peptide Index carries no affiliate links and no paid placement. Vendors cannot pay for a higher tier or a better ranking. Prices are publicly listed vendor prices normalized to $/mg, and trust tiers are built only from primary public records with each signal linked back to its source so you can check our work. Read the full methodology.
Prices are re-crawled and rebuilt nightly, and each compound page keeps the full price history since the first crawl. Public-record trust signals (entity, domain age, BBB, enforcement) are refreshed on the same nightly rebuild. Prices are ex-shipping.
$/mg is the price per milligram of peptide. Vendors sell different vial sizes and pack counts, which makes sticker prices hard to compare. Dividing the listed price by the total milligrams in the package yields a single comparable figure across every vendor and pack size. Blends are priced per mg of total peptide in the blend.