GLP-1 Class Research Compounds
The GLP-1 receptor agonist class has become one of the most extensively researched areas in metabolic science. GLP-1 (glucagon-like peptide-1) is an endogenous incretin hormone that acts via receptors expressed in the pancreatic beta cells, hypothalamus, brainstem, and gastrointestinal tract. Agonism of GLP-1R has been studied across glucose homeostasis, insulin secretion, gastric motility, central appetite regulation, and adipose tissue metabolism.
Three compounds dominate preclinical research in this area. Semaglutide is a selective GLP-1 agonist with a fatty acid modification extending its half-life. Tirzepatide adds dual agonism at the GIPR, enabling research into additive effects on metabolic parameters. Retatrutide extends this further to triple receptor agonism — GIP, GLP-1, and glucagon — making it the broadest-spectrum compound in the class currently in active research.
For a detailed mechanism comparison of all three compounds, see the Semaglutide vs Tirzepatide vs Retatrutide research overview. For research use only.
Available Products & Pricing
Supplied as lyophilised powder in boxes of 10 research-grade vials. Free express shipping on all orders.
Comparing the Three Compounds
Researchers studying metabolic and weight regulation pathways often compare these three compounds side by side. The key differentiator is receptor breadth — each subsequent compound adds receptor targets, enabling research into more complex signalling interactions.
| Compound | Receptor Targets | SKU | Price |
|---|---|---|---|
| Semaglutide | GLP-1R | SG10 (10mg) | $346.50 |
| Tirzepatide | GLP-1R + GIPR | TR10 (10mg) | $396.00 |
| Retatrutide | GLP-1R + GIPR + GcgR | RT10 (10mg) / RT20 (20mg) | $544.50 / $891.00 |
Why Researchers Choose Eternal Peptides
Janoshik-Verified Every Batch
HPLC purity, mass spectrometry identity, sterility (USP), endotoxin (LAL), and heavy metals (ICP-MS). COAs published per product page, independently verifiable at janoshik.com.
Australian-Based, ABN Registered
Eternal Peptides Wholesale is an ABN-registered Australian business. Not an overseas supplier operating behind a local domain. ABN shown on all invoices.
Wholesale Box Pricing
Supplied in boxes of 10 vials at wholesale pricing. No per-vial retail markups. Structured for research procurement budgets.
Free Express Shipping
Free express shipping on all orders. Orders dispatched within 1-2 business days of payment confirmation. COA documentation included with every order.
Frequently Asked Questions
What peptides are used in weight loss research in Australia? +
The GLP-1 class is the primary focus — Semaglutide (GLP-1 agonist), Tirzepatide (dual GLP-1/GIP agonist), and Retatrutide (triple GIP/GLP-1/glucagon agonist). All three are available wholesale from Eternal Peptides with Janoshik COA verification. For research use only.
What is the difference between Semaglutide, Tirzepatide and Retatrutide? +
Semaglutide is selective for GLP-1R. Tirzepatide adds GIPR co-agonism. Retatrutide adds glucagon receptor agonism to create a triple-receptor compound. Each broader receptor profile has been studied for differential effects on body composition, metabolic rate, and insulin sensitivity. See the full comparison overview for mechanism detail. For research use only.
Where can I buy GLP-1 peptides wholesale in Australia? +
Eternal Peptides Wholesale supplies Semaglutide (SG10), Tirzepatide (TR10), and Retatrutide (RT10, RT20) for qualified laboratory research. All batches Janoshik-verified. Wholesale box pricing, free express shipping. For research use only.
How are these compounds quality verified? +
Every batch is independently tested by Janoshik Analytical — HPLC purity, mass spectrometry identity, sterility (USP), endotoxin (LAL), heavy metals (ICP-MS). COAs are published on each individual product page and verifiable at janoshik.com before or after purchase. For research use only.
Are these peptides legal to purchase in Australia for research? +
GLP-1 class compounds are supplied by Eternal Peptides Wholesale for qualified laboratory research use only — not for human therapeutic use or compounding for human administration. GLP-1 class compounds have been subject to increased TGA regulatory attention following the October 2024 compounding changes. Customers are responsible for understanding all applicable Australian regulatory requirements for their research context. For research use only.