US Made & Shipped • Same Day Shipping • Now Shipping to Canada, EU, UK & Australia As Well!Premium Research Peptides You Can Trust
PSPeptides delivers the highest quality US-made research peptides with verified 99%+ purity. Every batch is rigorously tested by independent laboratories. Orders ship same or next business day.
PSPeptides In The Wild
Peptide Bundles
Curated multi-peptide stacks at a bundled price everything a protocol needs in one click.
Best-Selling Peptides
Explore our most popular research peptides, each verified for purity and potency.
Quality You Can Count On
We go above and beyond to ensure every product meets the highest standards of purity and quality.
Third-Party Tested
Every batch undergoes rigorous independent laboratory testing with HPLC and Mass Spectrometry verification.
99%+ Purity
Our strict quality control process ensures every peptide meets a minimum 99% purity threshold before shipping.
Fast Shipping
Orders placed before 2PM EST ship same day. Discrete packaging with full tracking on every order.
Expert Support
Our knowledgeable team is available 7 days a week to answer your questions and help with orders.
Get Paid to Rep PSPeptides
We're looking for fit, driven people athletes, coaches, and creators who live the lifestyle — to partner with PSPeptides and earn doing what they already love.
- Earn commission on every order you refer
- Your own discount code & tracking link
- Perfect for fitness enthusiasts & content creators
- Free to join, apply in minutes!
Rated Excellent on Trustpilot
See what our customers say — read our verified reviews on Trustpilot.
"An actual US company that shows their testing certificates and ships quick. 10/10."
"I sent my GHK and Reta off to a 3rd-party lab — everything came back exactly as advertised and passed heavy metals testing. An A+ source in the US."
"These guys go literally above and beyond. I put the wrong address in and they still sent a free replacement that same day. Exceptional team."
"Extremely happy with the service. I've placed two orders and both were dispatched in under three hours after payment. Communication was excellent, even late at night."
"Quick delivery, quality product and great customer service! I ordered from a few companies and this was by far the best. 5+ stars!!"
"I've been a customer for 8 months — my life has changed for the better thanks to these peptides. Shipping is insanely fast and the packaging is beautiful."
Ask Coach Brandon Johnson About Your Peptide Questions
Have questions about peptide research, reconstitution, dosing protocols, or which peptides are right for your goals? Book a free virtual consultation with Coach Brandon Johnson and get expert answers — no obligation.
Frequently Asked Questions
Yes, every batch is tested and the latest testing results batches that are being shipped are ALWAYS posted in our Test Reports/Certificates page!
Once your order has been processed and shipped, you'll receive an email confirmation with your tracking number. Orders placed before 12 noon EST typically ship the same business day (later orders ship the next business day). You can use the tracking link in your email to follow your package through UPS or USPS as it travels to you. You will receive notifications via email when your package has been dropped off at the carrier, is in transit, is out for delivery, and when it is delivered. My Account | Order Tracking
Yes, we ship internationally! We ship across the US and US territories, and now also to Canada, the EU, the UK, and Australia.
Our support agents are available from 9AM-10PM EST daily via call, text and email! Check out our Contact Us page for support details.
In-Depth Research Guides
Peer-reviewed research, dosing protocols, and industry comparisons to help you make informed decisions.
Retatrutide Complete Guide: Mechanism, Dosage, Research
The triple GLP-1/GIP/glucagon agonist making headlines — trial data, dosing, and comparison to tirzepatide.
Read Guide
GHK-Cu Complete Guide: Mechanism, Research, Protocols
Copper peptide research on wound healing, skin regeneration, hair studies, and peer-reviewed data.
Read Guide
BPC-157 Research Guide: Tissue Healing & Protocols
The most-studied tissue-repair peptide — mechanism, published research, and dosing protocols.
Read Guide
Best Peptide Companies 2026: 12 Vendors Compared
12 peptide vendors compared on purity, third-party testing, shipping speed, and payment options.
Read Guide
Peptide Sciences Alternatives: What to Use After Shutdown
Post-shutdown comparison of remaining US-based suppliers on purity, pricing, and transparency.
Read Guide
Peptide Half-Life Chart: 20+ Peptides with Data
Reference chart with storage temperature and reconstituted stability for 20+ research peptides.
Read GuideReady to Get Started?
Browse our complete catalog of premium research peptides. Free shipping on orders over $200.
Coach Brandon Johnson — Credentials
NU Life Provider Peptide Training Course
NASM Certified Nutrition Coach
NASM Certified Personal Trainer (CPT)
ISSA Specialist in Strength & Conditioning
ISSA Certified Glute Specialist
TRX Suspension Training Qualification
Living.Fit Kettlebell Level 1 Graduate