The Research Journal

Peptide science, clearly referenced.

Independent, literature-backed explainers on research compounds — every claim cited to PubMed, every framing strictly research-use-only.

Two Hormones, One Vial: The Tirzepatide Evidence, Read Honestly
Metabolic & longevity · Featured
Two Hormones, One Vial: The Tirzepatide Evidence, Read Honestly

Tirzepatide beat semaglutide head-to-head on weight loss in a randomised trial. Here is what the human data actually establish — and the hard line between a licensed medicine and a research-grade reference compound.

Scientific desk5 min read
Semaglutide: The Rare Catalogue Entry With Too Much Evidence
Metabolic & longevity
Semaglutide: The Rare Catalogue Entry With Too Much Evidence

Most research peptides suffer from thin, animal-only data. This GLP-1 receptor agonist has the opposite problem — and the gap between a licensed medicine and a reference vial is the whole story.

6 min
Growth Hormone Secretagogues, Explained: Ipamorelin, CJC-1295 and the GH/IGF Axis
Hormonal
Growth Hormone Secretagogues, Explained: Ipamorelin, CJC-1295 and the GH/IGF Axis

A clear, honest map of the growth-hormone-secretagogue class — the peptides studied to coax the pituitary into releasing more of its own hormone — and why their evidence base is thinner, and stranger, than the marketing suggests.

8 min
What Is GLOW (GHK-Cu + BPC-157 + TB-500)? The Repair Trio, Examined
Tissue repair
What Is GLOW (GHK-Cu + BPC-157 + TB-500)? The Repair Trio, Examined

GLOW pairs three of the most-studied “repair and renewal” peptides — GHK-Cu, BPC-157 and TB-500 — in a single vial. A clear-eyed look at what the evidence for each actually shows, and what combining them does not.

6 min
What Is KLOW? The GHK-Cu + BPC-157 + TB-500 + KPV Peptide Blend Explained
Tissue repair
What Is KLOW? The GHK-Cu + BPC-157 + TB-500 + KPV Peptide Blend Explained

KLOW takes the three-peptide GLOW “repair” blend and bolts on a fourth compound — the anti-inflammatory tripeptide KPV. It is the clearest example of how research peptide stacks grow, and of how fast the evidence thins as they do.

6 min
What Is BPC-157 + TB-500? The Original Repair Pair, Examined
Tissue repair
What Is BPC-157 + TB-500? The Original Repair Pair, Examined

The two-peptide combination that launched a thousand forum threads pairs the gastric pentadecapeptide BPC-157 with TB-500, a fragment related to thymosin β-4. Here is what the science actually shows — and where it runs out.

6 min
Tissue-Repair Peptides, Explained: BPC-157, TB-500, GHK-Cu and KPV
Tissue repair
Tissue-Repair Peptides, Explained: BPC-157, TB-500, GHK-Cu and KPV

A field guide to the four peptides the wellness world treats as shorthand for “healing” — organised by the mechanism each is actually studied for, and honest about where the evidence runs out.

9 min
Why Peptide Experiments Fail: Reproducibility and the Reagent Problem
Methods & QC
Why Peptide Experiments Fail: Reproducibility and the Reagent Problem

A large share of preclinical findings do not replicate — and in peptide research, a surprising amount of that failure begins in the vial. A methods-and-QC look at reagent quality as a primary experimental variable.

7 min
Research Peptides in 2026: How the FDA and EMA Treat Them
Regulation
Research Peptides in 2026: How the FDA and EMA Treat Them

A neutral 2026 map of how the FDA, the EMA and the anti-doping world actually treat research peptides — and why “Research Use Only” is a defined legal frame, not a loophole.

7 min
Peptide Stacks: The Logic, the Evidence, and the Marketing
Methods & QC
Peptide Stacks: The Logic, the Evidence, and the Marketing

Online forums present elaborate peptide “stacks” with the confidence of clinical protocols. The published literature tells a far humbler story — and the gap between the two is where the marketing lives.

8 min