Blacklisted vendor compilation — updated June 2026

I just did a quick analysis. PeptideKingdom's website was registered 4 days ago. Their SSL certificate, hosting provider, and website template are identical to PeptideKingz. The "About Us" text is 85% identical with minor rewording. Mods, I'd recommend adding PeptideKingdom to Tier 1 as a confirmed rebrand of PeptideKingz.

UPDATE: PeptideKingdom has been added to Tier 1 as a confirmed rebrand of PeptideKingz based on's analysis. Thank you for the quick catch. This is exactly why we maintain this list and why community vigilance matters. Scammers rebrand but their patterns are detectable. We'll continue updating this list monthly. Next update: April 15, 2026. Report any new scam vendors to ModMail.

Can we also add a note about "PureFlow BAC Water" sold on Amazon by MedSupplyDirect? That tested positive for endotoxins at 58x the acceptable limit. It's not a peptide vendor per se but it's part of the supply chain and people need to know.

Good call. We've added a separate section for contaminated supplies/accessories. PureFlow BAC Water from Amazon has been added with the LAL test results referenced. Remember: your reconstitution supplies are just as important as your peptide source. Contaminated water can make a perfectly good peptide dangerous. Stay safe everyone, and keep testing. This community's dedication to verification is what makes it valuable.