Vendor directory
Suppliers ranked by our published, objective trust score, calculated only from verified operational data — third-party testing, shipping, refund and reship policies, payment options, and support. Scores never reflect health or outcome measures. Each card shows the vendor's discount code (click to copy), links to their published COAs, and goes straight to their store.
Affiliate-supported. We may earn a commission on the vendor links below, at no extra cost to you — it never affects a vendor's trust score or the prices shown.
94/100· ExcellentShop ↗
Top-rated vendorSame-day dispatchFree shipment protection7+ yrs establishedApple & Google Pay
93/100· ExcellentShop ↗
Same-day dispatchOn-time delivery guaranteeNamed third-party labs5 payment options
92/100· ExcellentShop ↗
Same-day dispatchFree reship guarantee500+ COAs, QR per vial4+ yrs establishedCrypto accepted
92/100· ExcellentShop ↗
Account sign-in required to browse (Jul 2026)Same-day dispatchFree 2-day shipping $250+Lot-specific COAs4 payment options
92/100· ExcellentShop ↗
Same-day dispatch100% satisfaction guarantee4 payment optionsBioviridian-tested
92/100· ExcellentShop ↗
Same-day dispatchOn-time delivery guarantee5 payment optionsPublished COA library
90/100· ExcellentShop ↗
Same-day dispatchFree reship guarantee3 accredited labsKlarna pay-over-timeGMP facility
82/100· ExcellentShop ↗
Frequently the lowest priceWidest selectionPer-product COAs (HPLC-MS)Kentucky-basedZelle accepted
82/100· ExcellentShop ↗
Ships from the EUCash on deliverySEPA bank transfer
72/100· GoodShop ↗
8+ yrs establishedShips worldwideRefunds to original paymentCOA with every order
Ships from CanadaInterac & Bitcoin
67/100· GoodShop ↗
US-basedThird-party tested
* Affiliate partner. Affiliate status does not affect ranking — see the trust-score methodology.