Peptide Vendors
Rated peptide suppliers by region. Every vendor is scored on affordability, quality, shipping speed, and customer service based on community feedback.
Frequently recommended US peptide supplier with third-party COAs on every product. Wide catalogue of research peptides with fast domestic shipping.
PEPTIDESFYApply at checkoutPeptides available:
Apollo Peptide Sciences
California-based peptide supplier with third-party tested COAs on every product. Wide catalogue including GLP-1 compounds, research peptides, and NAD+. Free shipping over $200.
How we rate vendors
Affordability
Price per mg compared to the market average. Higher rating = better value for money.
Quality
Purity testing (HPLC, mass spec), third-party CoA availability, and consistency across batches.
Shipping
Dispatch speed, delivery times, packaging quality, and cold-chain handling.
Service
Customer support responsiveness, returns policy, and overall communication quality.
Disclaimer: Vendor ratings are based on community feedback and publicly available information. They are not endorsements or paid placements. peptides.fyi does not sell peptides and has no financial relationship with any vendor listed. Always verify third-party certificates of analysis (CoA) independently. Check your local regulations regarding peptide purchase and use.
Guides
Peptide guides
Dosing, benefits, and research
Store
Supplies
Reconstitution gear
Calculator
Dose calculator
Reconstitution maths
Are you a peptide vendor?
We're always looking to review new suppliers. If you'd like your brand listed and rated on peptides.fyi, send us a message.