Tirzepatide (GLP-2 Tirz): The Dual GIP/GLP-1 Agonist in Metabolic Research
Tirzepatide — sold here as GLP-2 Tirz — is a dual agonist that activates two incretin receptors at once: GIP and GLP-1. It sits between single-agonist semaglutide and triple-agonist retatrutide in the incretin research class.
Everything below is provided for research context only. This is a laboratory research compound — not a medicine, and nothing here is medical or dosing advice.
A note on the name: “GLP-2 Tirz” is Golden State Bio's product label for tirzepatide, reflecting its second-generation, dual-GLP-class action — it is a GIP + GLP-1 receptor agonist, not a GLP-2-receptor agonist.
What Is Tirzepatide?
Tirzepatide is a synthetic peptide engineered to co-activate the glucose-dependent insulinotropic polypeptide (GIP) receptor and the GLP-1 receptor, with a fatty-acid modification for a long, once-weekly profile. CAS 2023788-19-2.
How It Works in Research
- Dual incretin agonism: activates both GIP and GLP-1 receptors, engaging two complementary metabolic pathways.
- Glycemic control: studied for glucose-dependent insulin secretion and glucose handling.
- Body weight: characterized for weight endpoints in large randomized research programs.
These are research findings from clinical studies, provided for context — not outcomes we claim, and not medical advice.
Where It Sits: Single vs. Dual vs. Triple
Semaglutide (single, GLP-1) → tirzepatide (dual, GIP/GLP-1) → retatrutide (triple, GLP-1/GIP/glucagon). See the GLP overview.
Handling in the Lab
- Ships as a lyophilized powder; reconstitute with bacteriostatic water using aseptic technique.
- Store the sealed powder cold and dark (long-term at -4°F); once reconstituted keep refrigerated at 36–46°F and use within a short window.
- Minimize freeze-thaw cycles and vial punctures.
- Judge quality by the lot-matched Certificate of Analysis (HPLC purity, mass-spec identity), not the label.
Frequently Asked Questions
What is GLP-2 Tirz?
GLP-2 Tirz is Golden State Bio's research-grade tirzepatide — a dual GIP/GLP-1 receptor agonist studied in metabolic research. It is supplied for laboratory research use only.
Is tirzepatide a GLP-2 receptor agonist?
No. Despite the product name, tirzepatide is a dual GIP and GLP-1 receptor agonist. The 'GLP-2 Tirz' label reflects its dual, second-generation GLP-class action, not the GLP-2 receptor.
How is tirzepatide different from semaglutide?
Semaglutide activates only the GLP-1 receptor; tirzepatide activates both GIP and GLP-1 receptors (dual agonism).
What is tirzepatide's CAS number?
2023788-19-2.
Is GLP-2 Tirz approved for human use?
This product is supplied for laboratory research use only — not for human or veterinary use, and nothing here is medical advice.
References
Peer-reviewed research and recognized sources supporting the statements above, provided for research context only — not medical advice.
- Jastreboff AM, et al. Tirzepatide once weekly for the treatment of obesity (SURMOUNT-1). N Engl J Med. View source →
- Tirzepatide — dual GIP/GLP-1 receptor agonist pharmacology. PubMed. View source →
Research-grade GLP-2 Tirz (tirzepatide) — third-party tested, certificate of analysis per lot, same-day US shipping.
Shop research-grade GLP-2 Tirz →FOR LABORATORY AND RESEARCH USE ONLY. Golden State Bio supplies research-use-only chemicals for qualified researchers. Not for human or veterinary use; not evaluated by the FDA. Nothing here is medical advice.