How we keep peptide vendor comparisons accurate, sourced, and checkable.
We earn affiliate commission when a reader clicks through to a vendor, so we do not claim to be independent — we claim to be auditable. Every vendor is held to the same standard, every figure carries the date it was checked, and no affiliate term is an input to any ranking or sort. We surface pricing, stock availability, purity data, and trust ratings so you can make informed decisions without visiting dozens of individual websites.
Prices, stock levels, and product listings are checked regularly to keep comparisons accurate. When we detect a change — a new price, a product going out of stock, or a vendor adding a new listing — our database updates accordingly. Each product listing shows when it was last verified.
No vendor pays for placement, higher rankings, or favorable reviews on Peptide Compare. We may earn affiliate commissions when you click through to a vendor, but this never influences how vendors are ranked or which data we display. Rankings are determined by objective factors: price, blind-test purity results, and trust ratings, each with the date it was checked.
For full details, see our affiliate disclosure and ranking methodology.
We incorporate data from publicly available third-party sources to strengthen our comparisons:
We strive for accuracy, but mistakes can happen. If you notice incorrect pricing, an outdated stock status, a missing vendor, a peptide we do not track yet, or any other inaccuracy, tell us so we can investigate and correct it. A correction goes to Peptide Compare, which publishes and maintains every page here, and not to any individual.
Being plain about the route, because a contact promise nobody can act on is worse than none: the project does not yet run a contact address or a social account of its own, and we will not route you through a personal one. Setting up a project channel is on the list and it will be published in this section the day it exists.
Until then the one inbound form on the site is the vendor listing form at /vendors/apply. It reaches us, and its notes field takes free text, so a vendor who believes a listing, a price or a warning is wrong can send the detail that way. Every figure we correct keeps the date it was last read, so a fix is visible on the page rather than only in our records.