Tirzepatide is a synthetic peptide studied as a dual agonist that activates both the GIP and GLP-1 receptors. It is sold for laboratory and research use only.

How is tirzepatide different from semaglutide and retatrutide?

Semaglutide is a single GLP-1 agonist, tirzepatide is a dual GIP/GLP-1 agonist, and retatrutide is a triple GLP-1/GIP/glucagon agonist. The number of receptor targets is the main structural difference studied in research.

How is tirzepatide reconstituted and stored?

Tirzepatide ships as a lyophilized powder and is reconstituted with bacteriostatic water, with the water volume setting the mg/mL concentration. Reconstituted vials are refrigerated and, as a general research guideline, used within about 28 days.

Research Overview · Research Use Only

Tirzepatide: research overview

Q: What does dual agonist mean?

A dual agonist engages two receptors at once. Tirzepatide targets the GIP and GLP-1 incretin receptors together, which research suggests act synergistically on glucose and appetite signaling, whereas semaglutide targets GLP-1 alone.

Tirzepatide is a synthetic peptide studied as a dual receptor agonist - it activates both the GIP and GLP-1 receptors at the same time. Combining the two incretin pathways in a single molecule is what defines tirzepatide and made it a landmark compound in metabolic peptide research.

Research use only. This page is educational reference for laboratory research, not medical advice or human-dosing guidance. All products are sold strictly for research use and are not for human consumption.

What is tirzepatide?

Tirzepatide belongs to the incretin class of research peptides. Rather than acting on one receptor, it engages two - GIP and GLP-1 - which research suggests work together more effectively than either pathway alone. This dual mechanism is the reason tirzepatide is frequently used as a reference point in metabolic studies.

The dual-receptor mechanism

GLP-1 receptor - the incretin pathway involved in glucose-dependent insulin signaling and appetite regulation; the same target as semaglutide.
GIP receptor - a second incretin pathway that research indicates complements GLP-1 signaling, which is why the two are paired in a single dual agonist.

Tirzepatide vs. semaglutide vs. retatrutide

The metabolic peptides differ mainly in how many receptors they engage:

Peptide	Receptor targets	Class
Semaglutide	GLP-1	Single agonist
Tirzepatide	GIP + GLP-1	Dual agonist
Retatrutide	GLP-1 + GIP + glucagon	Triple agonist

See the companion retatrutide overview for the triple-agonist comparison, or browse the full research peptide catalog for current vial sizes and pricing.

Forms & handling in the lab

Tirzepatide ships as a lyophilized (freeze-dried) powder, commonly in 10 mg and 20 mg research vials. Before use it is reconstituted with bacteriostatic water, and the water volume you add determines the concentration in mg/mL.

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Calculate concentration & syringe units

Enter vial size, water volume, and target amount for exact figures.

Storage & stability

Lyophilized powder - most stable form; keep frozen or refrigerated and protected from light until reconstituted.
Reconstituted solution - refrigerate at roughly 2–8 °C; as a general research guideline, use within about 28 days.
Avoid repeated freeze–thaw cycles, heat, and shaking, which can degrade the peptide.

Frequently asked questions

What is tirzepatide?

A synthetic peptide studied as a dual GIP/GLP-1 receptor agonist. It is sold for laboratory and research use only.

What does "dual agonist" mean?

It engages two receptors at once - GIP and GLP-1 - rather than one, as with the single-agonist semaglutide.

How is it different from retatrutide?

Retatrutide adds a third target, the glucagon receptor, making it a triple agonist. See the retatrutide overview.

How is tirzepatide reconstituted?

With bacteriostatic water; the water volume sets the mg/mL concentration. Our calculator and reconstitution guide cover the math.

Related guides

Tirzepatide & more in the catalog

Live inventory and exact pricing on tirzepatide research vials.

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Research Use Only. All products are sold strictly for laboratory and research purposes and are not for human consumption, medical, veterinary, or diagnostic use. Your Peptide Partner is not a compounding pharmacy under Section 503A, nor an outsourcing facility under Section 503B, of the Federal Food, Drug, and Cosmetic Act. Tirzepatide is an investigational compound and is not an approved product. This page is educational reference only - it is not medical advice or dosing guidance. By ordering you confirm you are a qualified purchaser and agree to our Terms & Conditions; all orders are subject to review and acceptance. See our Research Compliance policy.