Peptide Vendor Directory

A categorized index of peptides and the vendors most commonly cited as reputable in each category. Informational only.

Read this first. This page is for informational purposes and contains no medical, dosing, or human-use guidance. Listings are not endorsements. Many peptides are sold for research use only and are not approved by the FDA for human consumption; FDA-approved peptide medications require a licensed prescriber. Laws differ by jurisdiction. Verify each vendor independently — check third-party Certificates of Analysis, business registration, and current regulatory status before purchasing anything.

Affiliate disclosure: Links marked Aff. are affiliate links — if you purchase through them we may earn a commission at no additional cost to you. This does not influence which vendors are listed.

Cosmetic / skincare peptides

Sold as cosmetics in finished formulations. Regulated as cosmetics, not drugs.

FDA-approved prescription peptides (via licensed telehealth)

Require a prescription from a licensed provider. Listed vendors operate as telehealth platforms or partner with compounding pharmacies.

Semaglutide (Ozempic, Wegovy)

GLP-1 receptor agonist.

Tirzepatide (Mounjaro, Zepbound)

Dual GIP/GLP-1 receptor agonist.

Liraglutide (Saxenda, Victoza)

GLP-1 receptor agonist.

Research-use-only peptides

Sold strictly for in-vitro research. Not for human consumption. Reputability here is defined narrowly: published third-party Certificates of Analysis, consistent identity/purity testing, and longevity in the market. Inclusion is not a safety claim. These vendors are listed without affiliate relationships.

Reference / catalog suppliers (analytical research)

Established research chemical suppliers used by academic labs.