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Research area

GLP-1 & incretin research peptides

Single, dual and triple incretin-receptor agonists for laboratory research into GLP-1, GIP and glucagon-receptor signalling — supplied as lyophilised vials and pre-filled research pens, each with a batch certificate of analysis.

6 productsHPLC-tested batchesSame-day dispatch before 12:00 UKFree tracked UK & EU shipping over £50
Retatrutide — mypeptides vial
Best seller
Peptides
Retatrutide
5 mg · ≥99%
£89.99£94.99-5%
Tirzepatide — mypeptides vial
Peptides
Tirzepatide
5 mg · ≥99%
£99.00
Semaglutide — mypeptides vial
Best seller
Peptides
Semaglutide
5 mg · ≥99%
£99.99
Mazdutide — mypeptides vial
Peptides
Mazdutide
5 mg · ≥99%
£79.99£89.99-11%
Reta Pen — mypeptides vial
Best seller
Pens
Reta Pen
40 mg · ≥99%
£199.00
Tirzepatide Pen — mypeptides vial
Best seller
Pens
Tirzepatide Pen
40 mg · ≥99%
£149.00

From single to triple agonists

Incretin research has moved quickly from single-receptor GLP-1 analogues to multi-receptor peptides. Semaglutide is the reference long-acting GLP-1 receptor agonist, tirzepatide adds GIP-receptor activity, mazdutide pairs GLP-1 with glucagon-receptor agonism, and retatrutide engages all three receptors.

Keeping all four in one catalogue lets a laboratory run like-for-like comparisons of receptor selectivity, signalling bias and peptide stability, using material from documented batches.

Vials or pre-filled pens

Lyophilised vials suit protocols that need flexible reconstitution volumes and long storage at −20 °C. The 40 mg pre-filled research pens hold a fixed, labelled quantity in a ready-assembled format, which removes the reconstitution step from the bench workflow.

Orders placed before 12:00 UK time (Mon–Fri) are dispatched the same working day by tracked delivery, free on UK & EU orders over £50.

At a glance

SemaglutideGLP-1 receptor5 mg vial
TirzepatideGIP + GLP-1 receptors5 mg vial · 40 mg pen
MazdutideGLP-1 + glucagon receptors5 mg & 10 mg vials
RetatrutideGIP + GLP-1 + glucagon receptors5 mg & 10 mg vials · 40 mg pen

Frequently asked questions

What is the difference between semaglutide, tirzepatide, mazdutide and retatrutide?

Their receptor profile. Semaglutide is a selective GLP-1 receptor agonist; tirzepatide is a dual GIP / GLP-1 agonist; mazdutide is a dual GLP-1 / glucagon agonist; retatrutide is a triple GIP / GLP-1 / glucagon agonist. They are used side by side to compare single- and multi-receptor incretin pharmacology.

How are incretin research peptides stored?

Lyophilised vials are stored at −20 °C, protected from light, and reconstituted with bacteriostatic or sterile water immediately before in-vitro use. Pre-filled pens are kept refrigerated at 2–8 °C, protected from light.

Do these products come with a certificate of analysis?

Yes. Where a batch certificate is available it is published on the product page, showing HPLC purity for that compound. Ask us if you need the paperwork for the batch you received.

Are GLP-1 research peptides for human use?

No. Everything in this range is supplied strictly as laboratory research material for in-vitro use. It is not a medicine, food, supplement or cosmetic and is not for human or veterinary use.

Research notice: every product in this range is supplied strictly as laboratory research material for in-vitro use. Not for human or veterinary use, and not a medicine, food, supplement or cosmetic.