Best Peptide Vendors — Where to Buy Peptides Online
14 vendors ranked by overall score across four transparent criteria: COA transparency (25%), purity verification (25%), customer reviews (25%), and pricing value (25%). Vendors need data in at least 3 categories to receive a full ranking.
Particle Peptides
Peptide Crafters
Skye Peptides
Polaris Peptides
Swiss Chems
Chemyo
Soma Chems
Pure Rawz
BioLongevity Labs
Peptide Sciences
Peptide Partners
Limitless Biotech
Biotech Peptides
Core Peptides
Insufficient Data (6 vendors)
These vendors have fewer than 3 scoring categories with data. Scores are preliminary and may change as we collect more information.
Astro Peptides
Paradigm Peptides
Simple Peptide
NextChems
Triumphant Labs
Apollo Peptide Sciences
How We Rank Peptide Vendors
Every vendor on PeptideVerdict is evaluated using publicly verifiable data. We parse COA (Certificate of Analysis) documents using AI to check for third-party lab verification, recent test dates, and proper methodology. Purity scores factor in Finnrick independent testing results where available. Customer review scores are sourced from Trustpilot and other review platforms, covering product quality, shipping, and customer service in one metric. Pricing is normalized to price per milligram for fair comparison across different vial sizes and concentrations.
We disclose all affiliate relationships and never let commissions influence rankings. Vendors cannot pay for higher scores. Read our full scoring methodology for details.