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10‑vial kitIncretin RetaNord Tirzepatide research peptide — 10-vial kit

Dual agonist Metabolic · GIP / GLP-1

Tirzepatide

Dual GIP / GLP-1 receptor agonist · 10-vial research kit

Engineered incretin peptide · dual GIP + GLP-1 agonist

Tirzepatide is a synthetic incretin peptide that activates two metabolic receptors — GIP and GLP-1 — in a single molecule. It is one of the most widely studied dual-agonist compounds in current metabolic research.

€58910 mg · 10-vial kitIn stock

Vial size

Kit size

Both kit sizes ship within the EU — free shipping either way.

Order this kit How to use

Plain, unbranded packaging. No product names, no logos — nothing on the outside indicating what is inside. Tracked to a DPD Locker or your address.

Guaranteed delivery. If your order doesn't reach you, we ship it again free — lost, damaged or stolen.

Purity 99%+ HPLC

Kit 10 or 30 vials

Ships in 24–48h

For laboratory and in vitro research use only. Not for human or veterinary use, and not for use in diagnostic procedures.

EU-stocked & shippedDispatched in 24–48hFree shipping10 or 30-vial kitsSealed, lyophilized vials

About Tirzepatide

Tirzepatide is a synthetic 39–amino-acid peptide engineered as a dual agonist of the GIP and GLP-1 receptors, with a fatty-acid modification that extends its plasma half-life. It sits alongside semaglutide and retatrutide in the incretin class that dominates today's metabolic and obesity research.

RetaNord supplies Tirzepatide as fixed kits of 10 or 30 lyophilized vials, each verified at 99%+ identity purity by independent third-party HPLC (Janoshik), and every kit ships with a lot-specific Certificate of Analysis. Supplied for laboratory and in vitro research use only.

How Tirzepatide works

Tirzepatide activates two incretin receptors with a single molecule: GIP (glucose-dependent insulinotropic polypeptide) and GLP-1 (glucagon-like peptide-1). Most peptides in the incretin class engage GLP-1 alone — the dual-receptor design is what separates tirzepatide in the literature.

The molecule is a 39–amino-acid chain carrying a C20 fatty-diacid moiety. That modification promotes albumin binding and slows clearance, which is why published work uses a once-weekly rather than daily administration schedule.

Mechanistic summary drawn from published literature, provided for research context only. Not a therapeutic claim.

What the research shows

Tirzepatide was evaluated in the SURPASS programme of registrational trials in type 2 diabetes, and subsequently studied in body-weight contexts. Published head-to-head arms report greater effects on glycaemic control and body weight than single GLP-1 receptor agonist comparators.

Where it sits in the class: semaglutide targets GLP-1 alone, tirzepatide adds GIP, and retatrutide adds glucagon as a third receptor. Full breakdown in the comparison, with primary sources in the references below.

An educational summary of published trial literature. It is not a claim about any outcome for any buyer, and RetaNord supplies this compound for laboratory research use only.

Storage & handling

Sealed, lyophilized vials. 2–8 °C for routine storage; −20 °C or below for long-term. Room temperature is for transit and handling only — it is not a storage state for a peptide.

Once reconstituted. Keep at 2–8 °C and never freeze — ice crystals damage the peptide irreversibly. Reconstituted with bacteriostatic water (0.9% benzyl alcohol) a vial is commonly used within about 30 days; with plain sterile water, within 24–48 hours.

Keep vials sealed and protected from light, and minimise freeze–thaw cycles of frozen stock — each cycle costs potency.

Work out concentration and draw volume in the reconstitution calculator →

Specifications

Category	Incretin receptor agonist
Compound class	Synthetic peptide — dual GIP/GLP-1 agonist
Presentation	10 vials per kit · lyophilized
Available sizes	5 · 10 · 15 · 20 · 30 · 40 · 50 · 60 mg per vial
CAS number	2023788-19-2
Molecular formula	C₂₂₅H₃₄₈N₄₈O₆₈
Molecular weight	≈ 4813 g/mol
Physical form	Sterile-filtered, freeze-dried
Identity purity	99%+ (HPLC)
Independent testing	Janoshik · third-party HPLC
Storage	2–8°C; −20°C long term
Documentation	Lot-specific Certificate of Analysis

Certificate of Analysis — batch VX351222Independent third-party testing by Janoshik · HPLC purity 99.557% and content verified.View the full report →

References & research

Selected peer-reviewed literature on tirzepatide via PubMed, provided for educational context. A reference does not imply a clinical claim for RetaNord products.

Tirzepatide — questions

Do the kits come with a Certificate of Analysis?

Yes — every kit ships with a lot-specific third-party Certificate of Analysis: independent HPLC purity and content testing by Janoshik, with the batch matching your vials. View the current CoA.

What is tirzepatide studied for?

In published research it is characterised as a dual GIP/GLP-1 receptor agonist and studied in metabolic and body-weight contexts. RetaNord supplies it strictly for laboratory research use — not as a medicine.

Why is this sold as a 10-vial kit?

These research compounds are supplied in fixed kits of 10 identical vials — the standard research quantity. One kit (10 vials) is the minimum order to the EU.

How should Tirzepatide be stored?

Sealed lyophilized vials keep at 2–8 °C, or −20 °C for long-term storage. Once reconstituted, keep refrigerated and never freeze it. See storage & handling for the full detail.

How do I work out the concentration?

The volume of bacteriostatic water you add sets the concentration — the vial size alone does not. Enter your vial size and diluent volume in the reconstitution calculator to calculate the concentration for your assay.

How does it differ from semaglutide and retatrutide?

They differ by how many incretin receptors they engage: semaglutide targets GLP-1, tirzepatide adds GIP, and retatrutide adds glucagon as a third. See the full comparison.

Documented peptides, shipped from the EU.

Every RetaNord kit ships within 24–48 hours, discreetly packaged and tracked. All kits ship within the EU. For laboratory research use only.

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