Overview
Researchers looking to buy Retatrutide research peptide for next-generation incretin research will find Advanced Peptide Science supplies this first-in-class triple receptor agonist at 99%+ HPLC-verified purity. Retatrutide simultaneously engages the GIP, GLP-1, and glucagon receptors, representing the most advanced compound in current preclinical metabolic peptide investigation.
Bacteriostatic Water (BAC Water) 30ml is required for reconstitution of this lyophilized compound. Available separately: Bacteriostatic Water 30ml.
Research Background
Retatrutide builds on the dual-agonist lineage established by Tirzepatide by adding glucagon receptor agonism to the GIP/GLP-1 co-activation profile. The compound is a synthetic peptide of approximately 4700 Da with engineered fatty-acid modification for extended preclinical half-life. Research interest centres on whether triple-receptor co-engagement yields additive or synergistic metabolic effects beyond dual incretin co-agonism alone.
Mechanism of Action (Research Context)
Mechanism investigation focuses on three concurrent class B GPCR engagement events: GLP-1R-mediated glucose-dependent insulin secretion, GIPR contribution to combined incretin signalling, and glucagon receptor (GCGR) activation driving hepatic glucose output and adipose lipolysis. The glucagon agonist arm is hypothesised to enhance lipolytic signalling and energy expenditure beyond what GIP/GLP-1 dual agonism alone provides.
Research Applications
- Triple-receptor incretin and glucagon co-agonism pharmacology research
- Glucagon receptor signalling and hepatic glucose-output studies
- Adipocyte lipolysis investigation under combined receptor stimulation
- Comparative research vs dual-agonist Tirzepatide and mono-agonist Semaglutide
- Multi-axis metabolic syndrome preclinical model investigation
Compound Specifications
| Molecular Weight | ~4700 Da |
| Sequence / Composition | First-in-class synthetic peptide triple agonist (GIP/GLP-1/glucagon receptor) |
| Appearance | White lyophilized powder |
| Purity | ≥ 99% (HPLC verified) |
| Storage | -20 °C, protect from light |
| Format | Lyophilized powder in sterile vial |
Quality Assurance
Each batch is independently verified by third-party analytical laboratories. Certificates of Analysis confirming ≥99% purity via HPLC are available on request at research@advancedpeptidescience.com.
Research Use Only. For Research Use Only. Not for human consumption. Not intended to diagnose, treat, cure, or prevent any disease. By purchasing you confirm research-only intent. These products have not been evaluated by the FDA.
Frequently Asked Questions
Where to buy Retatrutide 2026 COA verified?
Advanced Peptide Science supplies Retatrutide at 99%+ HPLC-verified purity with batch-specific Certificates of Analysis available on request. The compound is shipped from the United States to qualified research laboratories.
Retatrutide triple agonist research vial — what receptors are activated?
Retatrutide is a first-in-class agonist of three receptors simultaneously: GLP-1 receptor (GLP-1R), GIP receptor (GIPR), and glucagon receptor (GCGR). Research investigates synergistic vs additive effects of triple receptor co-engagement.
Is Retatrutide approved for human use?
Advanced Peptide Science supplies Retatrutide exclusively for in vitro and in vivo scientific research. Not approved by FDA for human use. Research use only.

