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Peptide research, explained.
New studies, trial stages and regulatory decisions explained in plain English, plus popular claims checked against the human evidence. Every piece names its sources and the date we checked them.
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Cagrilintide vs CagriSema: What Is the Difference?
Cagrilintide is a single experimental molecule. CagriSema is the combination of cagrilintide and semaglutide that Novo Nordisk tested in large trials and sent to the FDA. Here is how they differ, what the trials compared, and where approval stands.
Published September 15, 2026Research explained
Important studies and trials: what they tested, and what they did and did not show.
Monthly Weight-Loss Injections? What MariTide Trials Are Testing
MariTide is tested as a monthly injection, and newer trials try gaps of 8 or 12 weeks. Here is what each study actually asks, what has reported, and what is still a plan.
Published September 15, 2026Petrelintide and Amylin: How This Approach Differs From GLP-1
Amylin and GLP-1 are two different fullness signals. Here is how petrelintide's amylin-only approach differs, what its human trials have shown so far, and what is still unproven.
Published September 15, 2026Developments explained
Approvals, trial stages and regulatory decisions, each with its jurisdiction and date.
Ecnoglutide Approval Status: China, the US and Europe
Approved in China for type 2 diabetes and weight management in early 2026. No FDA approval or EU authorization found as of September 15, 2026. A dated, sourced status table and a timeline that separates trials, applications and approvals.
Updated September 15, 2026Efinopegdutide Clinical Trials: Is It in Phase 3? Every Trial, the Results, and Approval Status
Efinopegdutide is often searched with 'phase 3', but no Phase 3 trial exists as of September 2026. Here is every registered trial, what the finished ones found, and what is still unknown.
Updated September 15, 2026Claims examined
Popular peptide claims, checked against the human evidence.
GHRP-6 Approval and Sports Rules: What "Research Only" Means
"Not approved," "illegal" and "banned in sport" are three different findings. We checked FDA records and WADA's 2026 list to separate them for GHRP-6.
Published September 15, 2026
Matrixyl INCI Names: Original, 3000 and Synthe'6 Explained
Which peptide is inside Matrixyl, Matrixyl 3000 and Synthe'6, what else is in the supplier's blend, how to spot them on a label, and what each has actually been tested for.
Updated September 15, 2026
Peptides for Gut Health: What Has Actually Been Tested in Humans?
BPC-157 and KPV rest on rat, mouse and cell studies; BPC-157 has only a 2005 conference abstract in people. Larazotide reached human celiac trials with mixed results and a terminated Phase 3. Here's the full evidence table.
Updated September 15, 2026
How to Spot Fake Peptides: The Red Flags
Straight talk on fake and dodgy research peptides: the red flags, why a random vial can't be verified, and the only peptides you can actually trust.
Updated September 7, 2026
Peptides for Hair Growth: What Works and What's Hype
Which peptides actually help hair, and which are all hype? A straight-talking guide to copper peptides, GHK-Cu, and the injectable stuff, minus the sales pitch.
Updated September 7, 2026Looking for a specific compound? The peptide directory has a profile for every peptide we cover, and the legal status table shows where each one stands. Corrections are logged on our corrections page.