The PUŪRA Journal · 32 articles
Peptide research education, in plain English.
What each compound is, what has been studied, and where the evidence is still developing. Every article ends with what the research actually supports.
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Peptide of the Week
One peptide a week, explained by Dr. Jade Teta, ND
Every Thursday, Dr. Teta, a member of our Scientific Advisory Board, writes a one-page monograph on one research compound: where it came from, what researchers are studying, and how strong the evidence is. It’s free.
By Dr. Jade Teta, ND
PUŪRA Scientific Advisory Board
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Quality & Handling · 3 min
How Are Peptides Made? One Bead, One Link at a Time
How are peptides made? Usually not grown in cells. They're built one amino acid at a time on a tiny bead, and the small misses are why purity testing exists.
November 7, 2026Neuro Research · 3 min
What Is Semax? Where It Came From, and What "Approved in Russia" Really Means
What is Semax? A 7-amino-acid peptide built in Moscow from a piece of a stress hormone. It's a medicine in Russia. Here's why that isn't proof.
November 2, 2026Quality & Handling · 3 min
Does GHK-Cu Need to Be Refrigerated? How to Store a Sealed Vial
Does GHK-Cu need to be refrigerated? A sealed, freeze-dried vial lives in the fridge, dark and dry, with the freezer for long-term. Here's why.
October 31, 2026
Free kit · 3 guides · 23 pages
Go deeper with three complimentary guides.
Peptides 101, The Peptide Short List and The Lab Report Cheat Sheet, in one email.
Send me the kitRegulation · 3 min
Is GHK-Cu Legal? What the FDA Actually Did in 2026
October 30, 2026Tissue Research · 3 min
GHK vs GHK-Cu vs AHK-Cu: What's the Difference?
October 29, 2026Tissue Research · 3 min
Why Is GHK-Cu Blue? What the Color Tells You, and What It Can't
October 28, 2026Quality & Handling · 3 min
Are Peptides Steroids? The Difference Comes Down to Shape
October 23, 2026Tissue Research · 3 min
What Is KPV? The Three-Amino-Acid Tail of Alpha-MSH
October 11, 2026Tissue Research · 3 min
What Is TB-500? Where the Name Came From and What's Actually Been Studied
October 11, 2026Tissue Research · 3 min
What Is BPC-157? Where It Came From and What's Actually Been Studied
October 11, 2026Cellular Research · 3 min
What Is SS-31? The Research Peptide That Shares a Molecule With a Drug
October 11, 2026Cellular Research · 3 min
What Is MOTS-c? Where It Comes From, and What's Actually Been Tested
October 11, 2026Tissue Research · 3 min
TB-500 vs Thymosin Beta-4: The Main Differences Between the Fragment and the Parent Peptide, and What the Research Says
October 4, 2026Tissue Research · 3 min
Three-Peptide vs Four-Peptide Blends: What's in Each, and the One Difference
October 3, 2026Quality & Handling · 3 min
Made in USA vs. Imported Peptides: Where Each Step Happens
October 2, 2026Quality & Handling · 3 min
How to Handle Your Vials (and Why You Never Shake Them)
October 1, 2026Quality & Handling · 3 min
Peptide Half-Life Explained: Why Some Last Minutes and Others Last Days
September 30, 2026GH Secretagogues · 3 min
CJC-1295 With DAC vs. No DAC: What's the Difference?
September 29, 2026Tissue Research · 3 min
BPC-157 and TB-500: Why Researchers Study Them Together, and What the Research Actually Says
September 28, 2026GH Secretagogues · 3 min
Sermorelin vs Tesamorelin vs Ipamorelin: What Really Sets Them Apart
September 27, 2026Neuro Research · 3 min
Semax vs Selank: The Main Differences and What the Research Says
September 25, 2026Hormone Research · 3 min
Kisspeptin-10 vs Kisspeptin-54: Where the Name Came From and Which Form Was Studied
September 24, 2026Tissue Research · 3 min
Peptide Blends: Does pH Balance Matter?
September 23, 2026Cellular Research · 3 min
MOTS-c vs SS-31: Two Mitochondrial Peptides, Two Very Different Jobs
September 22, 2026Cellular Research · 3 min
Why Mitochondria Matter, and the Peptides Researchers Study Them With
September 21, 2026Metabolic Research · 3 min
What Does "Triple Agonist" Mean? A Plain-English Guide
September 20, 2026Tissue Research · 5 min
What Is GHK-Cu? The Copper Peptide, Explained Simply
September 19, 2026Quality & Handling · 3 min