Retatrutide
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Retatrutide
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CAS No:
2381089-83-2
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Chemical Name:
Retatrutide
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Synonyms:
Retatrutide;GIPR/GLP-1R;LY3437943Retatrutide;Retalutide;Retatrutide (sodium salt);Retatrutide RT5;retatrutide 5mg;Retatratide
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CAS No:
Description
Retatrutide is a novel triple agonist peptide of the glucagon receptor (GCGR), glucose-dependent insulinotropic polypeptide receptor (GIPR) and glucagon-like peptide-1 receptor (GLP-1R). Retatrutide inhibits human GCGR, GIPR and GLP-1R with EC50 values of 5.79, 0.0643 and 0.775 nM, respectively and mouse GCGR, GIPR, and GLP-1R with EC50 values of 2.32, 0.191 and 0.794 nM, respectively. It is an important tool for obesity research.Retatrutide potently activates the GLP-1R signaling pathway to stimulate glucose-dependent insulin secretion through activity at the GIP receptor (GIPR) or the GLP-1R.Retatrutide is a synthetic peptide with glucose-lowering effects. It is an antidiabetic agent against type 2 diabetes (T2D), stimulating insulin and suppressing glucagon secretion in a glucose-dependent manner.Retatrutide was also shown to delay gastric emptying, lower fasting and postprandial glucose concentration, decrease food intake and reduce body weight in patients with type 2 diabetes.
Retatrutide (LY-3437943) was discovered by the American pharmaceutical company Eli Lilly and Company. It is a triple glucagon hormone receptor agonist (GLP-1, GIP, and GCGR receptors) for obesity. The 2024 Lasker~DeBakey Clinical Medical Research Award has been given to Joel Habener and Svetlana Mojsov for their discovery of a new hormone GLP-1(7-37) and to Lotte Knudsen for her role in developing sustained acting versions of this hormone as a treatment for obesity.
Drug Information
Investigated for the treatment of type 2 diabetes mellitus (T2DM), obesity, and overweight in adults. Additional potential indications under clinical evaluation include non-alcoholic fatty liver disease (NAFLD), metabolic dysfunction-associated steatohepatitis (MASH), and cardiovascular risk reduction.
No significant hepatotoxicity has been reported in clinical trials to date. However, periodic monitoring of liver enzymes (ALT, AST) is recommended, especially in patients with pre-existing liver conditions or during long-term therapy.
Triple agonist of GLP-1, GIP, and GLP-2 receptors; peptide-based antidiabetic and anti-obesity agent.
Subcutaneously administered; metabolized via enzymatic degradation in liver and kidneys; eliminated renally and fecally.
Glycemic control in type 2 diabetes and chronic weight management in obesity or overweight with comorbidities.
Risk of GI adverse effects, hypoglycemia (with insulin/sulfonylureas), pancreatitis, gallbladder disease, and acute kidney injury; contraindicated in personal/family history of MTC or MEN 2; not for use in pregnancy.
Human lethal dose not established; preclinical data suggest a wide safety margin.
Generally well tolerated; most adverse events are mild-to-moderate gastrointestinal symptoms that improve over time.
Long-acting triple receptor agonist that enhances insulin secretion, suppresses glucagon, delays gastric emptying, promotes satiety, and may support gut integrity via GLP-2 activity.
GLP-1 Receptor Agonists; GIP Receptor Agonists; Peptide Hormones; Hypoglycemic Agents; Anti-Obesity Agents
Slow SC absorption (Tmax ~4–6 h); high plasma protein binding (~95%); primarily degraded by peptidases; excreted in urine and feces; half-life ~3.5 days enabling once-weekly dosing.
Inactive or low-activity peptide fragments generated by proteolytic cleavage, not dependent on CYP450 enzymes.
Approximately 3.5 days.
Retatrutide is a triple agonist of GLP-1, GIP, and GLP-2 receptors, promoting insulin secretion, suppressing glucagon release, delaying gastric emptying, enhancing satiety, and protecting renal function by reducing albuminuria in diabetic kidney disease models.
No significant impurities reported in clinical-grade formulations; minor peptide degradation products may occur during storage but are within acceptable limits per ICH guidelines.
Common side effects include nausea, diarrhea, vomiting, constipation, and headache; rare but serious risks include pancreatitis, gallbladder disease, hypoglycemia, and acute kidney injury.
In case of overdose or severe adverse reaction, discontinue drug immediately; provide supportive care including hydration, antiemetics, and monitoring of vital signs; no specific antidote available.
No known antidote; management is symptomatic and supportive; monitor for dehydration, electrolyte imbalance, and hypoglycemia; hospitalization may be required in severe cases.
Retatrutide has favorable safety profile in clinical trials with dose-dependent GI tolerability; no major organ toxicities observed; long-term human toxicity data still under evaluation.
Retatrutide; Glucagon-Like Peptide-1 Receptor Agonists; Obesity; Diabetes Mellitus, Type 2; Weight Loss Agents; Peptide Hormones
Not listed as a controlled substance under the U.S. Controlled Substances Act (DEA); not scheduled by FDA or international regulatory bodies.
Subcutaneous injection only; systemic absorption via SC route; not intended for oral, intravenous, or other routes of administration.
Nausea, vomiting, diarrhea, constipation, headache, fatigue, dizziness, abdominal pain, and hypoglycemia-related symptoms such as sweating, tremor, and confusion.
Pancreas, liver, gastrointestinal tract, kidneys, adipose tissue, central nervous system (via appetite regulation), and cardiovascular system.
Retatrutide Use and Manufacturing
Retatrutide is synthesized using recombinant DNA technology and solid-phase peptide synthesis (SPPS). The peptide backbone is assembled chemically, followed by purification via high-performance liquid chromatography (HPLC) and sterile filtration. Final formulation includes stabilizing excipients such as sodium chloride, citric acid, and polysorbate 20 in a pH-controlled buffer system for subcutaneous injection.
Retatrutide is an investigational triple agonist of GLP-1, GIP, and GLP-2 receptors being developed for the treatment of type 2 diabetes mellitus, obesity, and overweight in adults. It is also under clinical evaluation for weight management in patients with metabolic dysfunction-associated steatotic liver disease (MASH) and cardiovascular risk reduction.
Retatrutide is a once-weekly triple hormone receptor agonist developed by Eli Lilly and Company. It is a single-molecule peptide consisting of 39 amino acids with a molecular weight of approximately 4,731.33 Da. Its amino acid sequence has been optimised to achieve balanced agonist activity at the glucose-dependent insulinotropic polypeptide receptor (GIPR), glucagon-like peptide-1 receptor (GLP-1R), and glucagon receptor (GCGR). By simultaneously targeting all three receptors, retatrutide provides a multifaceted approach to metabolic regulation. Activation of the GLP-1 pathway suppresses appetite and delays gastric emptying, GIP signalling enhances insulin sensitivity and supports lipid metabolism, while GCGR activation increases energy expenditure and promotes hepatic fat oxidation. The complementary actions of these pathways enable comprehensive regulation of energy intake, metabolic efficiency, and energy expenditure, contributing to substantial weight loss and metabolic improvement.
Drug Function and Efficacy
Triple agonist of GCGR, GIPR, and GLP-1R, involved in weight management and blood sugar control
Registered Holders
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SICHUAN JISHENG BIOPHARMACEUTICAL CO LTD
Active
United States
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FUJIAN GENOHOPE BIOTECH LTD
Active
United States
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NANJING CELLNUO BIOPHARMACEUTICAL CO LTD
Active
United States
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