Vendor Directory
Research peptide suppliers with independent trust scores based on COA verification, third-party purity testing, and community reputation. No vendor pays for placement.
Research Vendors — Not For Human Use
These vendors sell peptides for research purposes only. If you are seeking peptides for personal use, the legal and safest pathway is through a licensed telehealth clinic with physician oversight. See our Clinic Directory. The regulatory landscape for research vendors is evolving rapidly following the April 2026 FDA announcement.
Peptide Sciences
US-based research peptide supplier with one of the most consistently reviewed COA programs in the industry. Third-party testing through Janoshik Analytical. Ships to researchers in the US. Sold for research purposes only.
Available
Janoshik Analytical
98.2%
United States
Highlights
- Consistent third-party COAs via Janoshik
- US domestic shipping
- Long-standing reputation (est. 2012)
- Wide catalog
Available Compounds
Payment Methods
Research use only. Not for human consumption. Following April 2026 regulatory changes, legal landscape for research vendors is evolving — consult applicable regulations.
Limitless Life Nootropics
Nootropic-focused research supplier with a strong selection of neurological and cognitive peptides. Particularly well-regarded for Semax, Selank, and other Russia-origin peptides that are harder to source with quality documentation.
Available
Janoshik Analytical
97.8%
United States
Highlights
- Best-in-class for Russian nootropic peptides
- Janoshik COAs
- US domestic shipping
- Knowledgeable customer support
Available Compounds
Payment Methods
Research use only. Specialization in harder-to-source compounds makes this a go-to for Semax and Epitalon specifically.
Swiss Chems
International research chemical supplier with US operations. Known for competitive pricing and reasonably consistent COA documentation. Offers both peptide powder and pre-mixed solution formats.
Available
Janoshik Analytical
97.1%
United States, European Union +1
Highlights
- Competitive pricing
- Multiple format options (lyophilized + solutions)
- COAs available for most products
- International shipping
Available Compounds
Payment Methods
Research use only. Community reviews are generally positive but more variable than top-tier suppliers.
Amino Asylum
US-based supplier with a broad catalog and active community following. Competitive pricing and frequent promotions. COA documentation has improved in recent years but is less consistent than dedicated peptide labs.
Available
Varies
96.4%
United States
Highlights
- US domestic only
- Active community following
- Competitive pricing
- Broad catalog
Available Compounds
Payment Methods
Research use only. COA consistency has been a community concern historically — verify COA for each batch ordered.
Trust Score Methodology
Scores are calculated from verifiable, public data. No vendor can pay to improve their score.
Don't know how to read a COA?
A Certificate of Analysis is the primary way to verify peptide purity and identity. Our guide walks through what to look for and what red flags to avoid.
Read: How to Evaluate a Peptide COA →Vendor listings are for informational purposes only. TruPeptide does not receive compensation from any listed vendor and does not facilitate purchases. Research vendors sell for laboratory and research use only — not for human consumption. Trust scores represent a point-in-time assessment and may not reflect recent changes. Always verify COAs independently before use.