Free Peptide Codex
The Free Peptide Codex
An open, plain-language reference to the research peptides most discussed in modern labs — categories, nomenclature, and handling notes. No sign-up. No storefront.
See this week's featured peptide →What this is
A neutral reference index built for researchers and the research-curious. Each entry states what a compound is and the research category it belongs to — nothing more, no claims.
How it's organized
Compounds are grouped by research area: metabolic, growth-hormone secretagogues, repair and recovery, cosmetic and collagen, mitochondrial, and neuro research peptides.
Featured rotation
A new research compound is spotlighted every weekday at peptideoftheday.org. The codex tracks the same rotation so you can read ahead.
An independent research reference. Not affiliated with any manufacturer. For research purposes only. Not for human consumption.