Tirzepatide (TIRZ)

In stock and ready to ship. Buy Tirzepatide (TIRZ) online from MyGLP1Store — third-party tested, with a certificate of analysis available on request. Order by 4:00 PM ET Monday–Friday or 12:00 PM ET Saturday and it ships the same day with tracking.

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Tirzepatide for Sale — Research-Grade, Third-Party Tested

Looking to buy Tirzepatide? MyGLP1Store offers Tirzepatide (TIRZ) for sale as a third-party lab-tested research peptide sourced direct from the manufacturer, with same-day U.S. shipping. Veteran-owned and trusted by researchers (Trustpilot 4.8).

TIRZ — Tirzepatide (Lyophilized Research Peptide, 5mg–120mg)

TIRZ (Tirzepatide) is a dual GIP and GLP-1 receptor agonist peptide studied in metabolic and endocrinology research models. It is widely explored for its combined action on glucose-dependent insulin secretion and appetite-related signaling pathways.

Due to its dual-receptor activity, Tirzepatide is commonly investigated in research focused on metabolic efficiency, glucose control mechanisms, and energy balance regulation. For background on how these receptor pathways are studied, see our tirzepatide research guide and our overview of GLP-1 research peptides.

Tirzepatide Specifications

Potential Research Applications:

• Metabolic pathway and glucose regulation studies
• GIP and GLP-1 receptor interaction research
• Energy balance and appetite signaling models
• Insulin response and endocrine function investigations

How Tirzepatide Compares to Other GLP-1 Research Peptides

Tirzepatide is a dual agonist acting on the GIP and GLP-1 receptors — one more pathway than semaglutide (GLP-1 only) and one fewer than retatrutide (GLP-1/GIP/glucagon). For a side-by-side of dose ranges and trial outcomes, see semaglutide vs tirzepatide.

Selected Research Literature

Tirzepatide is among the most heavily published dual-incretin agonists in metabolic research. Representative peer-reviewed reading:

• Jastreboff AM, et al. — SURMOUNT-1: tirzepatide once weekly in adults with obesity. [PubMed]
• Frías JP, et al. — SURPASS-2: tirzepatide versus semaglutide in type 2 diabetes. [PubMed]
• Coskun T, et al. — preclinical characterization of LY3298176 (tirzepatide) as a dual GIP/GLP-1 receptor agonist. [PubMed]

Tirzepatide (TIRZ) — Frequently Asked Questions

Where can I buy tirzepatide research peptide?

You can buy the tirzepatide research peptide directly from MyGLP1Store in vial sizes from 5mg to 120mg. Every batch is third-party tested and ships same-day from the US.

What is TIRZ?

TIRZ is the abbreviation for Tirzepatide, a dual GIP and GLP-1 receptor agonist peptide studied in metabolic and endocrinology research. MyGLP1Store supplies TIRZ as a lyophilized research peptide for laboratory use only.

Is TIRZ the same as Tirzepatide?

Yes. TIRZ is simply the short form of Tirzepatide used by researchers — it is the same dual-agonist research peptide.

Is TIRZ third-party tested?

Yes — every batch is third-party lab tested for purity and identity before release.

What other GLP-1 research peptides does MyGLP1Store offer?

Researchers studying TIRZ often also work with Cagrilintide (CAGRI), Semaglutide (SEMA), Retatrutide (RETA), and other compounds in our obesity research collection.

Nothing on this page is medical advice or a dosing recommendation.

Related Research Compounds

Tirzepatide (TIRZ) is commonly compared against other incretin and metabolic research peptides. Explore related third-party tested lyophilized compounds:

• Buy Retatrutide (RETA) — triple GIP/GLP-1/glucagon receptor agonist.
• Semaglutide (SEMA) — GLP-1 receptor agonist research peptide.
• Cagrilintide peptide (CAGRI) — long-acting amylin analog research compound.
• Cagrilintide + Semaglutide blend — dual-peptide metabolic research combination.

Tirzepatide — Further Research Reading

Background methodology and comparative data from our research library:

• Tirzepatide research guide — dual GIP/GLP-1 mechanism and published SURPASS/SURMOUNT data.
• Semaglutide vs tirzepatide — head-to-head dose comparison and trial outcomes.
• Semaglutide research guide — the single-agonist comparator used across the literature.
• Quality standards in GLP-1 research — how laboratories evaluate purity and analytical documentation.
• About our research lead — who reviews the analytical data behind every lot.

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Further reading

• Tirzepatide dosing — the approved 2.5mg to 15mg escalation ladder and results by dose.
• Tirzepatide cost — price per vial, per milligram and per month.
• Bulk tirzepatide — wholesale kits of 10 vials, about 20% less per vial.

Prefer a prefilled format? Tirzepatide is also available as a 3cc prefilled tirzepatide pen cartridge for the V3 auto-injection pen — no reconstitution required.

Prefer a pen? Skip reconstitution with the prefilled Tirzepatide 40mg Auto-Injection Pen — now on pre-order.

For research use only.