303 Peptides operates as a retail and bulk vendor with a catalogue of 59 peptides. The vendor maintains a minimum order quantity of one vial and lists prices for 49 of its offerings. Regarding testing, the vendor provides 65 certificates of analysis covering 10 of its peptides, with a reported purity of 99.5%. As there is no available anecdotal data or community feedback, the vendor’s operational history and customer service experience remain unverified.
Data last updated
Anecdotal signals
Testing coverage
Price
regional price-per-mg comparisons · 3 out-of-stock offers not shown · prices checked 2mo ago
We don't issue verdicts — we publish the evidence and let it speak. We hold 37 captured lab documents (COAs) for this vendor. The sections on this page hold the evidence behind each of those numbers.
18 of 46 observed peptides have a COA mapped to them. Latest captured reports are from Janoshik.