Summer Sale — 20% off sitewide with code GSB20Free shipping on orders over $200Buy 3 save 20% · Buy 5 save 35%New — Retatrutide now in stockSummer Sale — 20% off sitewide with code GSB20Free shipping on orders over $200Buy 3 save 20% · Buy 5 save 35%New — Retatrutide now in stock
The Journal

Peptide research,
explained.

Clear, sourced write-ups on the compounds we carry and the fundamentals of working with research peptides — no hype, just what the science says.

Semax: The Peptide Behind BDNF, Cognition, and Neuroprotection Research
Compound Deep-DiveLatest

Semax: The Peptide Behind BDNF, Cognition, and Neuroprotection Research

Semax is a synthetic ACTH(4-10) analog studied for BDNF upregulation, cognitive performance, and neuroprotection. Here's what the research shows about its mechanism, pharmacokinetics, and open questions.

Read article →
GHK-Cu: The Copper Peptide Behind Skin Regeneration, Wound Healing, and Neurological Research
Compound Deep-Dive

GHK-Cu: The Copper Peptide Behind Skin Regeneration, Wound Healing, and Neurological Research

GHK-Cu is a naturally occurring copper tripeptide with decades of research supporting its role in skin regeneration, gene expression, wound healing, and neurological function.

BPC-157 vs. TB-500: Mechanisms, Research, and Why They're Often Studied Together
Comparisons

BPC-157 vs. TB-500: Mechanisms, Research, and Why They're Often Studied Together

BPC-157 and TB-500 are two of the most studied repair-focused research peptides. How they differ in mechanism, what the research shows, and why they're often combined.

Peptide Purity: What ≥98% HPLC Means and Why It Matters for Research
Research Standards

Peptide Purity: What ≥98% HPLC Means and Why It Matters for Research

Peptide purity is the most important quality indicator for research compounds. What HPLC purity means, how it's measured, and what a CoA should include.

How to Store Peptides: Temperature, Light, and Freeze-Thaw Best Practices
Lab Practice

How to Store Peptides: Temperature, Light, and Freeze-Thaw Best Practices

Proper storage is critical for maintaining potency and research accuracy. The correct temperatures, light conditions, and freeze-thaw protocols.

BPC-157: What the Research Says About This Protective Peptide
Compound Deep-Dive

BPC-157: What the Research Says About This Protective Peptide

BPC-157 is a 15-amino-acid peptide with a strong preclinical track record for tissue healing, gut protection, and neurological effects. Here's what the research actually shows.

What Is BAC Water — And Why Does It Matter for Peptide Research?
Fundamentals

What Is BAC Water — And Why Does It Matter for Peptide Research?

Bacteriostatic water is the standard solvent for reconstituting research peptides. What it is, why it matters, how to use it, and what happens if you don't.

What Are Peptides? A Researcher's Guide to the Body's Molecular Messengers
Fundamentals

What Are Peptides? A Researcher's Guide to the Body's Molecular Messengers

Peptides are short chains of amino acids that act as the body's molecular messengers. What they are, how they work, and why researchers study them.

MOTS-c Peptide: Inside the Mitochondrial Signal Behind Metabolic and Longevity Research
Compound Deep-Dive

MOTS-c Peptide: Inside the Mitochondrial Signal Behind Metabolic and Longevity Research

MOTS-c is a mitochondria-derived peptide encoded by mitochondrial DNA. How it activates AMPK, influences metabolic aging, and why it's studied for longevity.

The Journal

New research, in your inbox.

Occasional notes on new compounds and the fundamentals of working with research peptides. No spam — unsubscribe anytime.