The last five years have seen an extraordinary shift in metabolic research. GLP-1 receptor agonists — once a niche class of compounds studied primarily for glycemic control — have moved to the center of obesity and diabetes science. And for good reason.
What Is GLP-1?
GLP-1 (glucagon-like peptide-1) is an incretin hormone naturally secreted by the intestinal L-cells in response to food intake. Its primary roles include stimulating insulin secretion, suppressing glucagon release, slowing gastric emptying, and reducing appetite through central nervous system signaling. GLP-1 receptor agonists are synthetic compounds designed to mimic and extend these effects.
The Evolution of the Drug Class
Semaglutide, developed by Novo Nordisk, was among the first GLP-1 analogs to demonstrate meaningful weight reduction in clinical trials — with participants losing an average of 15% of body weight over 68 weeks in the STEP trials. Its approval under the brand names Ozempic (diabetes) and Wegovy (weight management) marked a turning point in metabolic medicine.
Tirzepatide, Eli Lilly’s dual GIP/GLP-1 receptor agonist, raised the bar further. By targeting two incretin receptors simultaneously, it produced weight reductions of up to 20-25% in clinical trials — outperforming single-receptor agents and earning approval as Mounjaro and Zepbound.
Retatrutide, a triple agonist targeting GLP-1, GIP, and glucagon receptors, is now in advanced clinical trials with Phase 2 data showing up to 24% body weight reduction over 48 weeks — the most impressive figures recorded for a pharmacological obesity intervention to date.
Why Researchers Are Interested
Beyond weight loss, this peptide class is being studied for its potential roles in cardiovascular protection, neuroprotection, and NASH (non-alcoholic steatohepatitis). The mechanistic complexity of incretin signaling continues to open new research directions.
Our GLP-1 Catalog
Pure Peptides carries research-grade Semaglutide, Tirzepatide, Retatrutide, Liraglutide, Dulaglutide, Mazdutide, Survodutide, and CagriSema blends — all HPLC-verified, cold-chain shipped, and accompanied by Certificates of Analysis.
⚠️ All products are intended strictly for laboratory and in-vitro research purposes only. Not approved for human or veterinary use.