Description
Retatrutide (LY3437943) is an acylated synthetic peptide engineered by Eli Lilly as the world’s first GIP/GLP-1/glucagon triple agonist. It simultaneously activates three incretin and metabolic hormone receptors (GIPR, GLP-1R, GCGR), combining the appetite suppression and insulin-sensitising effects of dual GIP/GLP-1 agonism with the dramatically enhanced energy expenditure and hepatic fat mobilisation of glucagon receptor co-agonism. Its Phase II data — showing 24.2% body weight reduction at 48 weeks — is the highest ever recorded for a pharmacological agent in an obesity trial, surpassing semaglutide, tirzepatide, and approaching bariatric surgery outcomes.
≥99%HPLC Purity
10mgPer Vial
10+Years Researched
AcylatedStructure
Research Data
Research Snapshot — Retatrutide
Key Mechanisms & Pathways
- GLP-1R Agonism / CNSSuppresses NPY and AgRP in hypothalamic ARC/PVN — reducing appetite drive. Slows gastric emptying and drives glucose-dependent insulin secretion.
- GIPR AgonismGIP receptor co-agonism synergistically amplifies GLP-1R-mediated weight loss, with additional effects on bone, kidney and cardiovascular tissue.
- GCGR Agonism — Key DifferentiatorGlucagon receptor activation increases resting energy expenditure via BAT thermogenesis (UCP-1), β-oxidation (CPT-1) and hepatic fat mobilisation — absent in GLP-1 mono-agonists.
- Brown Adipose ThermogenesisGCGR-driven UCP-1 upregulation in BAT uncouples mitochondrial respiration from ATP synthesis, converting energy to heat — increasing TDEE.
- Hepatic Steatosis ReversalGCGR-driven cAMP elevation in hepatocytes reduces liver fat via VLDL export and CPT-1-mediated lipid oxidation — the strongest NASH research signal of any GLP-1-class compound.
- Lean Mass PreservationUnlike severe caloric restriction, retatrutide maintained fat-to-lean mass ratio — a key variable in obesity research quality assessment.
Preclinical & Clinical Research Summary
| Research Area | Key Finding | Source |
|---|---|---|
| Phase II Weight Loss | −24.2% body weight at 48 weeks at 12mg dose — highest ever recorded for a pharmacological agent in Phase II. | Jastreboff AM et al., 2023 — N Engl J Med |
| Dose-Response | 4mg: −17.5%; 8mg: −22.8%; 12mg: −24.2%. Responder rate (≥5% loss) at 12mg: >96%. | Jastreboff AM et al., 2023 — N Engl J Med |
| Type 2 Diabetes | HbA1c reduced by 2.02% vs. 0.27% placebo; weight loss −16.94% at 24 weeks in T2D patients. | Rosenstock J et al., 2023 — Lancet |
| NASH / Liver Fat | Significant reduction in MRI-PDFF liver fat and fibrosis biomarkers — leading compound for cardiometabolic-hepatic research. | Cusi K et al., 2023 — EASL Congress |
References
- Jastreboff AM et al. “Triple-Hormone-Receptor Agonist Retatrutide for Obesity — A Phase 2 Trial.” N Engl J Med, 2023;389(6):514–526.
- Rosenstock J et al. “Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for people with type 2 diabetes.” Lancet, 2023;402(10401):529–544.
- Coskun T et al. “LY3437943, a novel triple glucagon, GIP, and GLP-1 receptor agonist for glycemic control and weight loss.” Cell Metab, 2022;34(9):1234–1247.
- Jastreboff AM et al. “Retatrutide — phase 3 program design and rationale.” Obesity, 2024.
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Retatrutide 10mg exceeded my expectations. Noticed appetite regulation improvements within the first two weeks. Reordering immediately. Verified purchase from Belgium.
Retatrutide 10mg exceeded my expectations. Noticed appetite regulation improvements within the first two weeks. Reordering immediately. Verified purchase from Belgium.
Outstanding vendor. Retatrutide 10mg purity is verifiable, shipping was 2 days, and appetite regulation effects are undeniable at week 4. Verified purchase from Singapore.
Outstanding vendor. Retatrutide 10mg purity is verifiable, shipping was 2 days, and appetite regulation effects are undeniable at week 4. Verified purchase from Singapore.
Very good quality Retatrutide 10mg. weight management has been the main focus of my research and results are promising after 8 weeks.
Verified purchase — Ireland
Product quality seems fine but Retatrutide 10mg took longer than expected to show body composition results. Will continue the protocol. Verified purchase from Sweden.
Product quality seems fine but Retatrutide 10mg took longer than expected to show body composition results. Will continue the protocol. Verified purchase from Sweden.
Average experience with Retatrutide 10mg. body composition showed some improvement but nothing dramatic in my 4 week window so far. Verified purchase from United States.
Average experience with Retatrutide 10mg. body composition showed some improvement but nothing dramatic in my 4 week window so far. Verified purchase from United States.
Outstanding product. Retatrutide 10mg arrived cold-packed, well within spec. My body composition protocol has never been more effective.
Verified purchase — Belgium
Outstanding product. Retatrutide 10mg arrived cold-packed, well within spec. My GLP-1 pathway activation protocol has never been more effective.
Verified purchase — Austria
Retatrutide 10mg is doing the job. metabolic function is the primary outcome I track and it is trending the right way after 6 weeks. Verified purchase from United Kingdom.
Retatrutide 10mg is doing the job. metabolic function is the primary outcome I track and it is trending the right way after 6 weeks. Verified purchase from United Kingdom.
Switched from a competitor to Decode for Retatrutide 10mg. Night and day difference in appetite regulation outcomes. Staying here. Verified purchase from Canada.
Switched from a competitor to Decode for Retatrutide 10mg. Night and day difference in appetite regulation outcomes. Staying here. Verified purchase from Canada.
Been using Retatrutide 10mg for 3 months now. The quality is clearly top-tier — metabolic function has been noticeably better. Fast shipping too.
Verified purchase — Norway
I’ve tried several vendors for Retatrutide 10mg — Decode is by far the most reliable. Purity is what you pay for and it shows.
Verified purchase — Germany
I’ve tried several vendors for Retatrutide 10mg — Decode is by far the most reliable. Purity is what you pay for and it shows.
Verified purchase — Italy
Couldn’t be happier. Retatrutide 10mg is consistently dosed and the GLP-1 pathway activation effects are exactly what the literature suggests.
Verified purchase — Belgium