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Retatrutide

LY3437943, LY-3437943

A synthetic peptide acting as a triple agonist for GLP-1, GIP, and glucagon receptors, designed for treating obesity and type 2 diabetes by promoting weight loss and glycemic control.

Quick Stats
Studies 83
Trials 32
Formula C221H342N46O68
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Utility 5
pubmed Feb 6, 2025

Quantitative Comparison of Glucagon-Like Peptide-1 Receptor Agonists on Weight Loss in Adults: A Systematic Review and Model-Based Meta-Analysis.

Zhang. Shaolong S; Yu. Boran B; Xu. Jiamin J; Jin. Siyao S; Li. Yanming Y; Bing. Hao H; Li. Jueyu J;...

A huge new peptide called retatrutide (12 mg once a week) cut body weight by about 27% in clinical trials, beating all other GLP‑1 drugs. Tirzepatide also worked well, but not as dramatically. The study shows that people who start heavier lose more weight, and those with higher blood sugar see bigger glucose improvements.

Utility 4
pubmed Nov 7, 2024

Why are we still in need for novel anti-obesity medications?

Novikoff. Aaron A; Grandl. Gerald G; Liu. Xue X; D Müller. Timo T

Retatrutide is a new triple‑acting peptide that hits three gut hormone receptors at once. In early trials it cut body weight by about 25% in roughly half the time it takes the current best drug, tirzepatide, and may even beat the results of gastric‑bypass surgery. This shows that next‑generation anti‑obesity drugs could be dramatically more powerful than what we have now.

Utility 4
pubmed Sep 8, 2025

Appetite, eating attitudes, and eating behaviours during treatment with retatrutide in adults with type 2 diabetes: Results of a phase 2 study.

Kanu. Chisom C; Boye. Kristina S KS; Poon. Jiat Ling JL; Goetz. Iris I; Williamson. Suzanne S; Lou....

In a 36‑week trial with adults who have type 2 diabetes, the experimental peptide retatrutide (especially at 8 mg and 12 mg weekly doses) made participants feel less hungry, less likely to overeat, and more able to control their eating. These appetite changes were linked to bigger drops in body weight, and the effects were generally stronger than those seen with the existing drug dulaglutide.

Utility 4
pubmed Apr 2, 2025

The Effect of Retatrutide on Kidney Parameters in Participants With Type 2 Diabetes Mellitus and/or Obesity.

Heerspink. Hiddo J L HJL; Lu. Zeqing Z; Du. Yu Y; Duffin. Kevin L KL; Coskun. Tamer T; Haupt. Axel A...

Retatrutide, a triple‑receptor agonist, lowered urine albumin (a kidney stress marker) and boosted estimated kidney filtration rates in people with obesity (and in those with diabetes at high doses for albumin). The biggest kidney benefits were seen at the 8‑12 mg doses, especially in non‑diabetic overweight/obese participants.

Utility 4
pubmed Feb 5, 2025

Efficacy and safety of retatrutide, a novel GLP-1, GIP, and glucagon receptor agonist for obesity treatment: a systematic review and meta-analysis of randomized controlled trials.

Abdrabou Abouelmagd. Alaa A; Abdelrehim. Amro Mamdouh AM; Bashir. Mohamed Nabih MN; Abdelsalam. Fare...

A new drug called retatrutide, which hits three hormone receptors (GLP‑1, GIP, and glucagon), cut body weight by about 14% and improved blood sugar, blood pressure, and waist size in obese adults, with side‑effects similar to a placebo.

Utility 4
pubmed Feb 1, 2024

What is the pipeline for future medications for obesity?

Melson. Eka E; Ashraf. Uzma U; Papamargaritis. Dimitris D; Davies. Melanie J MJ

The abstract reviews new obesity drugs that combine gut hormones. The newest triple‑hormone combo, retatrutide (GLP‑1, GIP, and glucagon), is in phase‑3 trials and early data suggest it could cause more weight loss than the current best drug, tirzepatide, possibly approaching the results of bariatric surgery.

Utility 4
pubmed Jul 21, 2025

Efficacy and safety of retatrutide for the treatment of obesity: a systematic review of clinical trials.

Misra. Saurav S; Narayan. Ravi Kant RK; Kaur. Manmeet M

Retatrutide, a peptide that hits three gut hormone receptors, has been shown in several clinical trials to cause strong weight loss and better metabolic health when given as a weekly injection. The 12 mg dose worked best, helping people lose 5‑20% of their body weight, but it can cause stomach upset.

Utility 4
pubmed Jan 16, 2025

Efficacy and safety of triple hormone receptor agonist retatrutide for the management of obesity: a systematic review and meta-analysis.

Tewari. Jay J; Qidwai. Khalid Ahmad KA; Tewari. Ajoy A; Kaur. Savneet S; Tewari. Vineeta V; Maheshwa...

A new drug called retatrutide, which hits three hormone receptors at once, has been tested in four small clinical trials and consistently beat placebo in shrinking weight. The biggest effect was seen with a 12 mg dose, and side‑effects were about the same as taking a dummy pill. While more research is still needed, the early data suggest it could be a powerful tool for people looking to lose fat and improve metabolic health.

Utility 4
pubmed Sep 19, 2024

Seven glucagon-like peptide-1 receptor agonists and polyagonists for weight loss in patients with obesity or overweight: an updated systematic review and network meta-analysis of randomized controlled trials.

Xie. Zeyu Z; Zheng. Guimei G; Liang. Zhuoru Z; Li. Mengting M; Deng. Weishang W; Cao. Weiling W

A big study of 27 trials (15,584 people) shows that the experimental peptide retatrutide can cut body weight by about 20‑22% after 16 weeks or more, especially at the 8 mg and 12 mg doses. It also shrinks waist size by roughly 16‑17 cm and does this without raising serious side‑effects or causing low blood sugar. The effect is strongest in people without type‑2 diabetes, those who start with a higher BMI, and those who stay on the drug longer. Dual‑ or triple‑agonist drugs like retatrutide work better for weight loss than plain GLP‑1 drugs.

Utility 4
pubmed Oct 8, 2024

The First Triple Agonist for Antiobesity: Retatrutide.

Tetelbaun. Lauren L; Mullally. Jamie A JA; Frishman. William H WH

Retatrutide is a new experimental drug that hits three hormone receptors (GLP‑1, GIP, and glucagon) and has shown strong weight‑loss results in early‑stage trials. It works with a once‑weekly injection, has a half‑life of about six days, and its side‑effects are mainly stomach‑related, similar to other GLP‑1 drugs. Higher doses gave bigger drops in body weight, suggesting it could become a powerful tool for people looking to lose fat and improve metabolic health once it’s approved.

Utility 4
pubmed Sep 30, 2025

Shared mechanistic pathways of glucagon signalling: Unlocking its potential for treating obesity, metabolic dysfunction-associated steatotic liver disease, and other cardio-kidney-metabolic conditions.

Neff. Guy W GW

New drugs that mix glucagon and GLP‑1 signals, like retatrutide, are showing big weight‑loss and liver‑health benefits in early trials. They work by boosting metabolism, burning fat, and cutting appetite, while the GLP‑1 part keeps blood sugar in check. The long‑term safety and exact mechanisms are still being studied, but the results look promising for tackling obesity and fatty‑liver disease.

Utility 4
pubmed Jan 2, 2024

Review article: Pharmacologic management of obesity - updates on approved medications, indications and risks.

Lupianez-Merly. Camille C; Dilmaghani. Saam S; Vosoughi. Kia K; Camilleri. Michael M

This review looks at the newest drugs that help people lose weight, including the already‑approved pills and injections and the next‑generation compounds like tirzepatide and retatrutide that are about to hit the market. It explains how these drugs work on hormones that control appetite and metabolism, shows that they can keep people losing weight for a year or more, and points out the main side‑effects to watch for.

Utility 4
pubmed Jan 30, 2025

Comparative efficacy and safety of GLP-1 receptor agonists for weight reduction: A model-based meta-analysis of placebo-controlled trials.

Guo. Haoyang H; Yang. Juan J; Huang. Jihan J; Xu. Ling L; Lv. Yinghua Y; Wang. Yexuan Y; Ren. Jiyuan...

A big review of 55 placebo‑controlled trials shows that the newest GLP‑1‑based drugs, especially the triple‑agonist retatrutide, can cut far more weight than older medicines. While older drugs like liraglutide lose about 4 kg, retatrutide can drop 22‑24 kg after a year, though it’s still experimental. Side‑effects are mainly nausea, vomiting, diarrhea and constipation, and the drug works a bit better in younger people.

Utility 4
pubmed Oct 1, 2024

Incretin-Based Weight Loss Pharmacotherapy: Can Resistance Exercise Optimize Changes in Body Composition?

Locatelli. João Carlos JC; Costa. Juliene Gonçalves JG; Haynes. Andrew A; Naylor. Louise H...

New weight‑loss peptides like retatrutide can help you drop 15‑24% of body weight, but they also cause a noticeable loss of muscle (about 10% or 6 kg). Adding a structured resistance‑training program (at least 10 weeks long) can add back roughly 3 kg of lean mass and boost strength by ~25%, helping you keep the muscle you lose while still burning fat.

Utility 4
pubmed Feb 4, 2025

Comparative efficacy of incretin drugs on glycemic control, body weight, and blood pressure in adults with overweight or obesity and with/without type 2 diabetes: a systematic review and network meta-analysis.

Liu. Song S; Hu. Jiaqiang J; Zhao. Chen C; Liu. Hang H; He. Chunyang C

A big review of 24 trials shows that the new multi‑receptor peptide retatrutide can cut about 12 kg (26 lb) off body weight in people who are overweight or obese, and it also lowers blood pressure a bit. Its cousin tirzepatide works just as well or a little better for weight loss and drops systolic pressure by roughly 7 mmHg. Both drugs lower blood sugar by more than 1% in diabetics, and serious side‑effects are rare.

Utility 4
pubmed Sep 16, 2025

Efficacy of GLP-1-based Therapies on Metabolic Dysfunction-associated Steatotic Liver Disease and Metabolic Dysfunction-associated Steatohepatitis: A Systematic Review and Meta-analysis.

Wang. Yahao Y; Zhou. Yue Y; Wang. Zhihong Z; Ni. Yunzhi Y; Prud'homme. Gerald J GJ; Wang. Qinghua Q

A big review of 25 trials found that drugs that activate the GLP‑1 receptor – like liraglutide, semaglutide, tirzepatide and the newer peptide retatrutide – can cut liver fat by about 5% after roughly six months. Retatrutide showed the biggest drop in liver fat, and these drugs also improved liver inflammation and cell damage markers without hurting the liver.

Utility 4
pubmed Jun 30, 2025

Effects of retatrutide on body composition in people with type 2 diabetes: a substudy of a phase 2, double-blind, parallel-group, placebo-controlled, randomised trial.

Coskun. Tamer T; Wu. Qiwei Q; Schloot. Nanette C NC; Haupt. Axel A; Milicevic. Zvonko Z; Khouli. Cou...

In a 36‑week trial with people who have type 2 diabetes, the experimental peptide retatrutide cut total body fat by up to about 26% at the highest dose, far more than the standard drug dulaglutide (≈2.6%) or placebo (≈4.5%). Fat loss grew with higher doses, and the amount of lean muscle lost was similar to other weight‑loss treatments. Side effects were mostly mild stomach issues and were similar across groups.

Utility 4
pubmed Jun 10, 2024

Triple hormone receptor agonist retatrutide for metabolic dysfunction-associated steatotic liver disease: a randomized phase 2a trial.

Sanyal. Arun J AJ; Kaplan. Lee M LM; Frias. Juan P JP; Brouwers. Bram B; Wu. Qiwei Q; Thomas. Meliss...

Retatrutide, a new triple‑hormone peptide, cuts liver fat by up to 82% in 24 weeks and drives massive weight loss (around 23‑24% at the highest doses). The effect gets bigger with higher doses and is linked to better insulin sensitivity and lower abdominal fat. It’s still in early trials, but the results are striking for anyone looking to tackle fatty liver and obesity.

Utility 4
pubmed Jul 20, 2025

Efficacy and Safety of GLP-1 Receptor Agonists, Dual Agonists, and Retatrutide for Weight Loss in Adults With Overweight or Obesity: A Bayesian NMA.

Sinha. Binayak B; Ghosal. Samit S

A big analysis of 19 trials shows that retatrutide, a triple‑hormone peptide (GLP‑1, GIP, glucagon), can cut about 11 kg of weight on average, which is a bit more than the best GLP‑1 drugs (around 9 kg). It also makes it far more likely to lose 15% or more of body weight, but it comes with a higher chance of side effects.

Utility 4
pubmed Nov 24, 2023

Retatrutide showing promise in obesity (and type 2 diabetes).

Doggrell. Sheila A SA

Retatrutide, a new drug that hits three hormone receptors (GLP‑1, GIP, and glucagon), helped people lose a lot of weight in a Phase 2 trial – about 7% at the lowest dose and up to roughly 18% at the highest dose over 24 weeks. The main side effects were typical for this class – nausea, diarrhea and vomiting – and it also raised heart rate by up to 7 beats per minute, which could be a concern. The data look promising for obesity and type‑2 diabetes, but we still need head‑to‑head comparisons with existing drugs like semaglutide or tirzepatide before it can be recommended for self‑experimentation.