Research area
Compounds investigated for tissue repair. This area carries an unusually wide gap between the volume of animal literature and the near-absence of controlled human trials — a gap readers should weigh heavily.
This is a field of scientific investigation, not a category of treatment. A compound listed here has been studied in this context; that is not a claim that it treats any condition. See how we grade the evidence.
3 compounds
Also known as Body Protection Compound 157, PL 14736, PL-10
Tissue & Recovery Research • Gastrointestinal Research
A synthetic 15-amino-acid sequence derived from a protein found in human gastric juice. Extensively studied in rodent injury models; almost no published controlled human data.
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Also known as Copper tripeptide-1, Glycyl-L-histidyl-L-lysine copper(II), GHK
Skin & Dermatology Research • Tissue & Recovery Research • Longevity Research
A naturally occurring three-amino-acid peptide that binds copper, found in human plasma and widely used as a topical cosmetic ingredient. Strong mechanistic and gene-expression data; thin controlled clinical evidence.
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Also known as Thymosin β4, Tβ4, TMSB4X (gene)
Tissue & Recovery Research • Immune Research
Thymosin β4 is a naturally occurring 43-amino-acid actin-binding peptide that has completed randomised human trials as an eye drop. "TB-500" is a shorter synthetic fragment sold as a research chemical — and the two are not interchangeable.
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Peptide Science
Peptides are short chains of amino acids. What separates a peptide from a protein, why the body uses them as signals, and why that makes them both useful drugs and difficult ones.
Regulation
The phrase appears on nearly every research peptide sold online. It is a statement by the seller about intended use — not a regulatory designation, and not a safety assessment.
Clinical Trials
How to search ClinicalTrials.gov for a peptide, what each field on a trial record means, and how to tell an active programme from an abandoned one.
Guides
Nine questions that separate a study which tells you something from one that only looks like it does — written for readers without a research background.