Tirzepatide

Tirzepatide (LY3298176): a dual GIP/GLP-1 agonist for research

Tirzepatide is a laboratory research peptide (a short, lab-made chain of amino acids, the units that build proteins), listed under the development code LY3298176. Its defining feature is that one molecule works on two gut-hormone receptors, the GIP receptor and the GLP-1 receptor, which makes it a dual agonist (a compound that activates two receptor targets). It is supplied as a freeze-dried powder in a sealed vial, strictly for in-vitro (test-tube and cell) research only.

Key highlights

• Compound: Tirzepatide (LY3298176), a dual GIP/GLP-1 agonist research peptide.
• Purity: over 99% (HPLC), third-party tested by Janoshik.
• Form: white freeze-dried (lyophilised) powder in a sealed vial.
• Sizes: 10mg and 20mg vials, plus a 10x bulk pack.
• Shipping: same-day dispatch from Sydney, free express over $200.

What is Tirzepatide? A plain explanation

Tirzepatide is a peptide, not a steroid and not a finished medicine. Its chain is 39 amino acids long. An agonist is a molecule that fits into a receptor and turns it on, the way a key turns a lock. Tirzepatide is a dual-acting agonist because it does this at two incretin receptors at once. Incretins are gut hormones involved in blood-sugar control and energy balance, which is why Tirzepatide is useful for studying how those two receptor pathways respond.

How Tirzepatide works at the receptor level

Tirzepatide began from the shape of GIP (glucose-dependent insulinotropic polypeptide, a gut incretin hormone) and was engineered so the same molecule also triggers the GLP-1 (glucagon-like peptide-1) receptor. In laboratory binding and signalling studies it acts strongly at the GIP receptor, close to the body’s natural GIP, and more modestly at GLP-1. A common comparison is Retatrutide, which adds a third receptor target, so teams studying the mechanism of action (how a molecule produces its effect) can see what changes when two targets become three. All this work stays on the bench, with no human or animal testing.

Is Tirzepatide approved, or is it research-only?

The Tirzepatide offered here is a research compound, still under study and not an approved product. No regulator has cleared it for the use sold on this page, including the TGA (Australia’s Therapeutic Goods Administration) and the FDA. Treat it as a research material only, never as a medicine, supplement, cosmetic or weight-management product. It is intended solely for controlled laboratory research.

What Tirzepatide is used for in the lab

Within the lab, Tirzepatide is used mainly as a reference molecule for incretin receptor studies, and you will find it in our Metabolic Research range. For contrast, laboratories sometimes set it next to a peptide that works through a different route, such as Cagrilintide, an amylin analogue (a compound that mimics amylin, a separate hormone in glucose and energy signalling). Placing a GIP/GLP-1 agonist beside an amylin-based compound helps researchers map how different receptor systems behave. These uses are limited to in-vitro research.

Purity and third-party testing (Certificate of Analysis)

Before any vial is listed, GreenLabs AU has Tirzepatide tested by Janoshik, an independent third-party laboratory. Purity is measured at over 99% by HPLC (high-performance liquid chromatography, which separates a sample so its purity can be checked), and a blind check confirms the sample is Tirzepatide rather than another GLP-1 peptide. The batch certificates are gathered on our certificates page, so you can read the full Certificate of Analysis (CoA, the lab report for a batch) before you order.

Buy Tirzepatide in Australia and New Zealand: sizes, shipping and bulk

• Buy Tirzepatide online in Australia and New Zealand directly from GreenLabs AU, in 10mg and 20mg vials; for larger projects, the 10x Tirzepatide bulk pack lowers the price per vial.
• Orders before 12pm AEST are dispatched the same business day from our Sydney location by tracked Australia Post Express.
• Delivery is usually 2 to 4 business days to metro areas, 3 to 5 to regional, and 4 to 6 to New Zealand; free express once your order passes $200.

How to store and reconstitute Tirzepatide

• Keep sealed vials cool and out of light: below 25°C short-term, or about -20°C for longer storage.
• To prepare a sample, reconstitute (dissolve) the powder with sterile or bacteriostatic water (water with a mild preservative that slows bacterial growth).
• Keep the mixed solution refrigerated, and avoid repeated freeze-thaw cycles, which can break the peptide down.

Tirzepatide specifications

Tirzepatide FAQs

What is Tirzepatide (LY3298176)?

It is a synthetic research peptide that acts as a dual agonist at the GIP and GLP-1 receptors. LY3298176 is the development code it is usually listed under, and it is supplied as a freeze-dried powder for in-vitro research.

Is Tirzepatide a peptide or a steroid?

It is a peptide, made from a 39-amino-acid chain. Steroids have a very different structure and work in a different way, so the two should not be mixed up.

Is Tirzepatide a GLP-1 or a GIP agonist?

It is both at once. A single Tirzepatide molecule activates the GIP receptor and the GLP-1 receptor together, which is exactly what “dual agonist” means.

How pure is it, and can I see a CoA?

GreenLabs AU Tirzepatide is third-party tested by Janoshik to over 99% purity by HPLC, and a blind test confirms the sample is Tirzepatide. Every batch has a Certificate of Analysis you can view on our certificates page.

How is Tirzepatide stored and reconstituted?

Keep sealed vials below 25°C for the short term, or near -20°C for longer storage. Reconstitute with sterile or bacteriostatic water, refrigerate the mixed solution, and avoid repeated freeze-thaw.

Can I buy Tirzepatide in Australia and New Zealand, and in what sizes?

Yes. It is available to order online in 10mg and 20mg vials, plus a 10x bulk pack, shipped from Sydney with tracked express delivery.

What does the milligram number mean?

It is simply the amount of peptide powder sealed in the vial, either 10mg or 20mg. It is a research quantity, not a dose, because the product is not for human or animal use.

Is Tirzepatide approved for human or medical use?

No. It is an investigational research compound, not approved by the TGA or FDA for the use sold here, and it must not be used in humans or animals.

Disclaimer: Tirzepatide is sold for in-vitro laboratory research only. It is not a medicine, supplement, or cosmetic, and it is not for human or animal use. By placing an order, you confirm that you are a qualified researcher and will handle the product in line with all relevant laws.