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GLP-1 & Multi-Agonists

GLP-1 and multi-agonist research peptides: Semaglutide (GLP-1 SM), Tirzepatide (GLP-2 TR) and Retatrutide (GLP-1 RT) vials, plus BPC-157 blends, shipped from the USA.

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GLP-1 & Multi-Agonists: Semaglutide, Tirzepatide and Retatrutide

This collection covers our GLP-1 and multi-agonist research peptides: Semaglutide (GLP-1 SM), Tirzepatide (GLP-2 TR) and Retatrutide (GLP-1 RT), plus Semaglutide and Tirzepatide blended with BPC-157. Each is supplied as a lyophilized powder in several vial strengths for analytical, in vitro and other nonclinical research in the USA.

What Are GLP-1 Research Peptides?

GLP-1 research peptides are synthetic peptides used to study the glucagon-like peptide-1 (GLP-1) receptor and related metabolic receptors. Laboratories use them to examine receptor-binding characteristics, pathway activation, downstream cellular signaling and peptide stability under controlled conditions. They are research tools for qualified professionals only and are not for human or veterinary use.

Semaglutide vs. Tirzepatide vs. Retatrutide for Research

The three peptides are usually chosen by how many receptor pathways a study needs to cover:

  • Semaglutide (GLP-1 SM): a single-receptor model for GLP-1 receptor interactions, pathway activation and downstream cellular responses. Available in 5, 10 and 30 mg vials.
  • Tirzepatide (GLP-2 TR): studied for its interactions with both the GLP-1 and the glucose-dependent insulinotropic polypeptide (GIP) receptors, for research on receptor-binding dynamics and how interconnected endocrine pathways influence each other. Available in 5, 10, 30, 60 and 120 mg vials.
  • Retatrutide (GLP-1 RT): used in models that examine how the GLP-1, GIP and glucagon receptor systems interact, including pathway selectivity and receptor cross-talk. Available in 5, 12, 24, 30 and 60 mg vials.

GLP-1 Blends with BPC-157

Two combined formulations let researchers study a GLP-1 pathway peptide alongside BPC-157 in one material: Semaglutide / BPC-157 (30/3.5 mg) and Tirzepatide / BPC-157 (30/1.3 mg). They are intended for analytical research on compound identity, purity, formulation stability, dissolution, peptide interactions and cellular signaling. Published BPC-157 findings are predominantly preclinical, so no conclusions about human safety or effectiveness should be drawn.

Common Research Applications

  • Receptor-binding studies at the GLP-1, GIP and glucagon receptors
  • Pathway selectivity and downstream signaling after receptor engagement
  • Relationships between interconnected metabolic and endocrine receptor systems
  • Peptide stability and formulation behavior under controlled conditions

Choosing a Vial Strength

Each peptide comes in several vial sizes so the amount per vial can match the scale of your experiments. Different strengths of the same peptide count together toward volume pricing, so a study that needs several vials can mix sizes and still get 8% off 3 or more, or 12% off 5 or more, applied automatically in the cart.

How GLP-1 Research Peptides Are Supplied

All GLP-1 and multi-agonist peptides in this collection arrive as a white lyophilized (freeze-dried) powder in a sealed vial, the format chosen for stability in storage and ease of reconstitution. Single-peptide pages list the CAS number and molecular weight, and blend pages the molecular weight of each peptide, so the material can be matched to your study records. Blends state the amount of each peptide per vial, for example 30 mg of Semaglutide with 3.5 mg of BPC-157.

Testing and COA

Where a lot's certificate is published, the product page shows its purity by reverse-phase HPLC, with identity confirmed by mass spectrometry and endotoxin screening by an independent HPLC-MS laboratory; otherwise it reads "Lot COA coming soon". Published certificates of analysis are listed in our COA library by lot number.

Storage and US Shipping

Store lyophilized GLP-1 peptide vials at −20 °C, protected from light and moisture. We ship within the United States Monday through Thursday, with same-day dispatch on orders placed by 2 PM ET and free shipping on orders of $150 or more to the contiguous US.

Peer-reviewed studies on GLP-1 receptor agonists are indexed on PubMed, the research database of the US National Library of Medicine.

Answers

Frequently Asked Questions

What is a GLP-1 research peptide?

A GLP-1 research peptide is a synthetic peptide used to study the glucagon-like peptide-1 receptor and related metabolic receptors, including receptor binding, pathway activation, downstream signaling and peptide stability.

What is the difference between semaglutide, tirzepatide and retatrutide?

In research, Semaglutide (GLP-1 SM) models the GLP-1 receptor alone, Tirzepatide (GLP-2 TR) is studied at the GLP-1 and GIP receptors, and Retatrutide (GLP-1 RT) at the GLP-1, GIP and glucagon receptors.

What is a multi-agonist peptide?

A multi-agonist peptide acts on more than one receptor. Tirzepatide and Retatrutide are studied as multi-agonists because they engage several metabolic receptors, which makes them useful for research on receptor selectivity and cross-talk.

What vial strengths are available?

Semaglutide comes in 5, 10 and 30 mg vials, Tirzepatide in 5, 10, 30, 60 and 120 mg, and Retatrutide in 5, 12, 24, 30 and 60 mg. The BPC-157 blends come as 30/3.5 mg (Semaglutide) and 30/1.3 mg (Tirzepatide).

What are the GLP-1 and BPC-157 blends used for?

They let researchers study a GLP-1 pathway peptide alongside BPC-157 in one material, for analytical work on compound identity, formulation stability, dissolution, peptide interactions and cellular signaling.

How should GLP-1 peptide vials be stored?

Store the lyophilized vials at −20 °C, protected from light and moisture.

Can I mix vial strengths for a volume discount?

Yes. Different strengths of the same peptide count together, so 3 or more vials take 8% off and 5 or more take 12% off, applied automatically in the cart.

Are GLP-1 research peptides for human use?

No. They are supplied strictly for analytical, in vitro and other nonclinical laboratory research by qualified professionals, and are not for human or veterinary use.