Tirzepatide

GLP-1, GIP receptor dual agonist

Stocked in 10mg, 15mg, 20mg, 30mg, 40mg, 50mg, 60mg at MontanaPep in Great Falls, Montana. Sold for laboratory research use only.

Sizes and pricing for Tirzepatide
Size	Catalog no.	Price per vial
10mg	TR10	$20
15mg	TR15	$25
20mg	TR20	$30
30mg	TR30	$40
40mg	TR40	$50
50mg	TR50	$60
60mg	TR60	$70

Classification

Synthetic dual GIP/GLP-1 receptor agonist

Structure and chemistry

Tirzepatide (LY3298176) is a 39-amino-acid, fatty-acid-modified peptide engineered from the GIP sequence with activity at both the GIP and GLP-1 receptors. Its molecular design was intended to combine GIP and GLP-1 receptor activity in one long-acting molecule. Published structural descriptions should be matched to the exact chemical reference standard.

What the published research shows

Tirzepatide has an extensive published record spanning molecular pharmacology, receptor signaling, cell-based assays, rodent metabolic models, Phase 1/2 proof-of-concept work, the SURPASS type 2 diabetes program, and the SURMOUNT obesity program. Research has also expanded into cardiovascular risk, obstructive sleep apnea, metabolic liver disease and other obesity-related conditions.

Mechanism of action

A unimolecular dual agonist at the GIP and GLP-1 receptors. The development program tested whether combining GIP activity with GLP-1 activity could improve glycemic control and body-weight outcomes beyond selective GLP-1 receptor agonism.

Development history

The molecule was identified as LY3298176 during Eli Lilly discovery research. The 2018 discovery paper connected molecular design to receptor assays, animal studies and early human testing; later Phase 2 and Phase 3 programs established a large clinical evidence base.

Current regulatory status

Tirzepatide is an FDA-approved medicine for specific indications, marketed by Eli Lilly as Mounjaro and Zepbound. Catalog material sold as tirzepatide is a research-grade item and is not the approved drug product.

Analytical testing

For an analytical reference, identity and purity should be treated separately. HPLC/RP-HPLC can assess chromatographic purity, while LC-MS or another suitable identity method can provide molecular-mass evidence for the intended tirzepatide form.

Research use only. MontanaPep supplies Tirzepatide exclusively for in-vitro laboratory research. It is not sold as a drug, food, cosmetic or supplement and is not for human or veterinary use. This page is a reference summary of published literature and regulatory records. Material is produced by pharmaceutical API manufacturers; how that process works is described in our research library.

Ordering from Great Falls

MontanaPep, also known as Montana Peptides, is an independently owned supplier based at 715 13th Ave S, Great Falls, Montana. Local pickup is available by arrangement, and we ship to research addresses across Montana including Billings, Missoula, Bozeman, Helena, Butte, Kalispell and Havre. Call (406) 799-0812 or email customerservice@montanapep.com.