Verified Peptide Supplier Directory — 381 Listed Suppliers & Manufacturers

Compare peptide suppliers, manufacturers, vendors, and CDMOs by location, business model, capabilities, and documented quality signals.

229 Manufacturers106 GMP Certified241 US/EU Suppliers95 Asia Suppliers

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Pepsup logo

Pepsup

Pepsup is an EU-based retail…

ZeusPeptides logo

ZeusPeptides

ZeusPeptides is an EU-based research…

Popular Peptides (popularpeptides.ca) logo

Popular Peptides (popularpeptides.ca)

Popular Peptides is a Canadian…

SPT Peptide Ltd logo

SPT Peptide Ltd

SPT Peptide Ltd is a…

Volta Peptides logo

Volta Peptides

Volta Peptides is a Canadian…

Lyze Labs logo

Lyze Labs

Lyze Labs supplies research peptides…

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How to find a peptide supplier

A peptide supplier can be a manufacturer producing material in-house, a CDMO handling development and production for clients, a bulk wholesaler selling larger quantities, or a retail research vendor selling small catalog quantities. Each listing above shows a confidence score based on publicly available company data, certifications, and quality documentation — see the scoring rubric at the bottom of this page.

Before ordering, check the supplier's Certificates of Analysis, third-party testing record, and GMP or ISO certifications. Our guides walk through verifying COAs and comparing manufacturers step by step.

Peptide supplier questions

What should I check before choosing a peptide supplier?

Batch-specific Certificates of Analysis, third-party lab testing, GMP or ISO certification, verifiable company details, and clear shipping and refund terms.

What does the confidence score mean?

A 0–100 rating based on public company data, certifications, and documentation quality. High (85–100) means established and well-documented; Medium (70–84) means reliable but newer or less documented; Low (below 70) means limited public information.

What is the difference between a manufacturer and a CDMO?

A manufacturer produces peptides at its own facilities. A CDMO additionally provides development services such as process development, scale-up, and regulatory support for client programs.

What does "research use only" mean?

Products sold strictly for laboratory research, not for human or veterinary use. A research-use label does not replace proper documentation or regulatory compliance.

How do I request a quote from a supplier?

Use the Request a Quote link to describe your requirements, and we will match you with relevant suppliers from the directory.

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