- Research Use Only Peptides
Contact Optimal Peptides.
Optimal Peptides are third-party tested RUO peptides, with a COA for every vial. Ships quickly and directly from U.S. peptide laboratories, with secure credit card checkout.
Response time
We typically reply within 1 business day.
Direct email
support@optimalpeptides.com
Address
1001 Bannock Street, # 413 Denver, CO 80204
Real people, US-based
No bots, no overseas call centers — your message is read by our team.
Need answers to common questions?
Most questions are already covered in our FAQ — research-use framework, COAs, testing methods, shipping, and more.
Protected by honeypot + verification · We reply within 1 business day