Pre-filled peptide pens, tested to a clinical standard.

PeptidePure supplies high-purity research peptides across the UK, with a range built around the GLP-1 and GLP-1/GIP class of compounds that sit at the centre of modern metabolic science. Our flagship retatrutide pens - sold as RetaPro and in the RetaMaxx retatrutide + cagrilintide blend - are investigational triple-receptor agonists studied across appetite regulation, glucose metabolism and energy expenditure. In the lab, researchers often compare retatrutide (reta) against tirzepatide- and semaglutide-class peptides to characterise receptor activity and metabolic signalling.

Peptides in this family are popularly described as “skinny jab” research compounds because of their role in weight-management and body-composition research. Where tirzepatide is studied as a dual GIP/GLP-1 agonist, retatrutide adds glucagon-receptor activity for a triple-pathway profile, and cagrilintide is explored as an amylin analog alongside it. Every compound we stock is characterised for its research context only - PeptidePure makes no human-use, medical or therapeutic claims.

Each pre-filled pen is lab-tested to 99%+ purity, security sealed and supplied with a certificate of analysis on request, then sent out with fast, tracked UK dispatch. Whether your work focuses on GLP-1/GIP signalling, next-generation metabolic peptides or recovery and regeneration science, our catalogue is intended solely for in-vitro research and laboratory study - research use only, not for human consumption.