- All batches COA verified with >99% HPLC Tested purity
Precision Peptides for Research Performance
- Pharmaceutical-grade research peptides >99% purity.
- Genuine Janoshik Certificates of Analysis (COA) on all batches.
- The only fully verified place to buy peptides in Northern Ireland
Best Selling Stack
How it works
Simple, secure, and science-backed
Choose your peptide
Browse our research catalog of validated sequences.
We ship cold & fast
Vacuum-sealed, Next Day Delivery, Straight from our Medical Fridges
Research with confidence
Every product has an official Certificate of Analysis (COA) from Janoshik Labs.
Best-selling peptides
What Our Clients Say
"The CoAs were verifiable which we hadn't had in the past, purity has been consistent across batches. Easily our preferred supplier."
"Next Day Shipping was flawless. Vials arrive intact, properly lyophilised, and well-labeled."
"Peptides NI sets the bar for transparency. Proper Janoshik COA with every order — exactly what we needed."
Frequently Asked Questions
Our peptides are tested to ensure >99% purity using HPLC analysis.
See our Product pages for Purity and link to fully Verifiable Janoshik Certificate of Analysis (COA)
We ship all orders on the same day straight from our Medical Fridges via Royal Mail Tracked 24
All batches are 3rd party Tested with Janoshik which is the industry Gold standard for Certificate of Analysis.
All our batches are Publicly verifiable via the Janoshik Wesite.
Our COA’s contain genuine QR code and links to the Janoshik Website are provided on all product pages.
Photos of the Vial and Batch number are always provided.
No, for research purposes only.