Retatrutide
GLP-1 / GIP / Glucagon Triple Agonist
Half-life: ~6 days (estimated)
Research Profile
Relative research assessments — educational reference only.
Target Receptors
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Currently an investigational new drug not yet approved for medical use. Demonstrates potent cardiovascular and metabolic alterations in clinical trials.
"A novel triple receptor agonist targeting GLP-1, GIP, and glucagon receptors simultaneously — the first of its kind in human Phase 2 trials. Early data suggests it may surpass dual agonists."
Full Description
Retatrutide is a unimolecular triple agonist targeting glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon receptors. Adding glucagon receptor agonism to the GIP/GLP-1 dual mechanism theoretically increases energy expenditure via thermogenesis and hepatic fat mobilization, while the GLP-1 and GIP components manage appetite and insulin secretion. Phase 2 trial data (2023) showed up to 24.2% mean weight reduction at 48 weeks — the highest ever reported in a clinical obesity trial.
Mechanism of Action
Triple receptor co-agonism: GLP-1R (appetite suppression, insulin secretion), GIPR (adipose lipolysis, insulin potentiation), GcgR (hepatic glucose output regulation, thermogenesis, lipolysis). The glucagon component drives energy expenditure not achieved by dual agonists.
Reported Benefits
- • Highest recorded weight loss in clinical trials (24.2% at 48 weeks)
- • Dramatic reduction in hepatic fat (liver fat resolution in most subjects)
- • Increased resting energy expenditure
- • Comprehensive metabolic syndrome reversal
Potential Side Effects
- • Increased heart rate (transient)
- • Gastrointestinal side effects (nausea, diarrhea, constipation)
- • Skin hyperesthesia (increased sensitivity) in some subjects
- • Hypoglycemia risk if combined with insulin
Frequently Asked Questions
What is the primary use case for Retatrutide in research?▼
How does it burn fat without exercise?▼
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For Research Reference Only
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References
- 1.Retatrutide effects on diabetic rats' cognition. PubMed (2026). Ferreira J, et al.. pubmed.ncbi.nlm.nih.gov/42527705/ ↑
- 2.Retatrutide and the urinary tract infection signal: Is the answer hidden in timing?. PubMed (2026). Koufakis T, et al.. pubmed.ncbi.nlm.nih.gov/42493254/ ↑
- 3.Retatrutide fact check: Has a man died after taking the unapproved weight loss jab?. PubMed (2026). Mahase E, et al.. pubmed.ncbi.nlm.nih.gov/42425580/ ↑
- 4.Effects of retatrutide on learning and memory in streptozotocin-induced male diabetic rats. PubMed (2026). Keskin U, et al.. pubmed.ncbi.nlm.nih.gov/42385950/ ↑
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