BPC-157 and TB-500 are often mentioned together, yet they come from entirely different parent molecules. Here is how they compare in origin and in the mechanisms research has explored.

Price is only one part of the picture. This checklist explains how to assess a UK research peptide supplier, from verifiable lab reports to responsible labelling.

The first question about CJC-1295 is usually whether it has DAC. This guide explains what DAC is and how it changes the peptide's duration of activity in research.

CJC-1295 and Ipamorelin act on two different parts of the growth hormone axis. This guide explains the rationale behind studying them together and why the no-DAC form is usually used.

"Cutting" is a familiar goal in fitness culture, and peptides are increasingly mentioned alongside it. Here is what research has examined and what remains unknown.

Why research peptides are almost always supplied as a freeze-dried powder rather than a tablet, and what reconstitution means in a laboratory setting.

Longevity research has put a few peptides and related molecules in the spotlight. Here is what scientists are actually investigating, and where the evidence stops.

Quick, clear answers to the questions we hear most about research peptides, with links to our fuller guides.

What exactly is a peptide, and how do the main research families differ? This introductory guide covers the basics, from structure to storage and reconstitution.

Tissue repair is one of the most active areas of peptide research. This guide covers the main compounds studied, chiefly BPC-157 and TB-500, and the limits of the evidence.

Interest in peptides has grown in sport and fitness circles. This guide explains what researchers are studying, and why anti-doping rules matter first of all.

Retatrutide is one of the most discussed compounds in metabolic research. This guide covers its mechanism, the clinical findings to date and its regulatory status.

Behind the headlines about “weight-loss injections” is a family of peptide hormone analogues. We explain the science, the key compounds and how they are regulated.

BPC-157 is a synthetic peptide derived from a protein found in gastric juice. Here is what it is, what laboratory and animal studies have looked at, and where the evidence currently stands.

CJC-1295 is a synthetic analogue of growth hormone-releasing hormone (GHRH). This guide explains what it is, how the DAC and no-DAC versions differ, and what research examines.

GHK-Cu is a short tripeptide bound to a copper ion that occurs naturally in the body. This guide covers its structure and the areas laboratory research has investigated.

MOTS-c is a short peptide encoded by mitochondrial rather than nuclear DNA. Here is an overview of what it is and why it attracts research interest.

NAD+ is not strictly a peptide but a coenzyme found in every cell. This guide explains what it is and why it features so heavily in cellular-energy and ageing research.

Selank is a synthetic peptide based on tuftsin, investigated mainly in cognitive and emotional-regulation research. Here is what the studies have looked at.

Semax is a synthetic peptide based on a fragment of ACTH, studied in cognitive and neuroprotective research. This guide explains what it is and how it relates to Selank.

TB-500 is a synthetic peptide related to the naturally occurring protein Thymosin Beta-4. This guide explains what it is and which areas early-stage research has explored.

Tesamorelin is a GHRH analogue with an unusually well-documented clinical history. This guide explains what it is, what sets it apart, and what research has examined.