Verified Peptide Supplier Directory — 431 Listed Suppliers & Manufacturers

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

209 Manufacturers91 GMP Certified267 US/EU Suppliers117 Asia Suppliers

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BulkGLP logo

BulkGLP

Dallas-Fort Worth supplier of retatrutide…

✓ Verified
Redline Bio Labs logo

Redline Bio Labs

Conroe, Texas research peptide supplier…

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StudzPeptides logo

StudzPeptides

Arizona research peptide supplier with…

Research Supplier
Prime Peptide Solutions logo

Prime Peptide Solutions

Prime Peptide Solutions is a…

Retail Research Peptides
Quanta Nova logo

Quanta Nova

Quanta Nova is a US…

Research Supplier
Premium UK Peptides logo

Premium UK Peptides

Premium UK Peptides is a…

Research Supplier
TrueCore Lab logo

TrueCore Lab

TrueCore Lab is a US-based…

Research Supplier
Expert Peptide logo

Expert Peptide

Expert Peptide is a China-based…

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Compare peptide suppliers

Featured listings are paid placements. Verified suppliers with a confidence score of 80 or above appear next, in an order that rotates daily; verification is a paid review of company ownership and documents. Confidence scores are set by our editorial review. Sort by highest score to rank every listing by confidence score alone.

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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 evidence we check ourselves. High (90–100) means a Verified listing or an established company with an independent public record; Medium (70–89) means an active supplier with no red flags, scored on named company details and checkable lab reports; Low (below 70) means a specific problem such as an open FDA warning letter. How we score suppliers.

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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