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Single compound

Retatrutide

Catalog size
$155
USD per vial · 20 mgCatalog price
Research only

Retatrutide is a synthetic peptide studied for coordinated activation of three metabolic hormone receptors, with human research examining glucose regulation, appetite, body weight and liver fat.

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Material
Retatrutide
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In the literature

A closer look at the science.

GLP-1, GIP and glucagon receptor agonist

What is Retatrutide?

Retatrutide, also designated LY3437943, combines glucagon-like peptide-1, glucose-dependent insulinotropic polypeptide and glucagon receptor activity within one molecule. Its discovery program connected receptor assays and obese-mouse experiments with early human pharmacology, providing a framework for studying how several hormonal signals interact.

Reference identity
Research class
GLP-1, GIP and glucagon receptor agonist
Catalog search names
Reta · GLP-3R
Literature designation
LY3437943

This reference describes the published literature. Exact supplied form and chemical specifications require product-specific documentation. The studies are linked in Selected literature.

Mechanisms under investigation

The three receptors influence overlapping aspects of energy and glucose regulation. In the discovery experiments, glucagon receptor signaling contributed increased energy expenditure, while GIP and GLP-1 receptor activity contributed reduced food intake. The relative contribution of each pathway in humans cannot be read directly from the mouse findings.

Documented lines of inquiry

Research areas

  1. 01

    Glucose regulation and appetite

    A 40-week phase 3 trial in 537 adults with type 2 diabetes found greater average HbA1c reductions than placebo. HbA1c reflects blood glucose over time. Separate exploratory phase 2 questionnaires found reduced reported hunger and appetite in several study groups. Those self-reports do not directly measure food intake or isolate each receptor’s contribution. [4][5]

  2. 02

    Body-weight outcomes

    A randomized phase 2 study involving 338 adults with obesity or overweight and associated conditions found larger average weight reductions with retatrutide than placebo. Gastrointestinal events and changes in heart rate were among the findings tracked alongside efficacy. [2]

  3. 03

    Liver-fat measurement

    A 98-participant substudy examined people with elevated liver fat using imaging-based measurements. Liver-fat reductions accompanied broader metabolic changes. An imaging endpoint is distinct from proving fibrosis reversal or preventing liver-related clinical events. [3]

Study topics describe the cited models, not established benefits of this catalog material.

Reading the evidence

What the studies
can tell us.

Human trials with supporting preclinical pharmacology

The cited studies include randomized trials of weight and glucose endpoints, a liver-fat imaging substudy and exploratory appetite questionnaires. They support several lines of metabolic inquiry, with experimental receptor studies providing mechanistic context. Results remain specific to the participants, study formulations and measurements; changes in appetite scores are distinct from measured food intake or long-term health outcomes.

What remains uncertain

Trial averages conceal individual variation, and the cited studies alone do not resolve long-term outcomes or rare harms. Sponsor involvement should be considered when evaluating the evidence. Findings from clinical formulations do not establish the identity, quality, safety or equivalence of WYZ research materials.

Read the source

Selected literature

Primary studies and clearly identified supporting sources. Each link opens the original record.

  1. 01
    2022 · Preclinical study and human trial

    LY3437943, a novel triple glucagon, GIP, and GLP-1 receptor agonist for glycemic control and weight loss… (opens a new tab)

    Discovery pharmacology, mouse metabolism and early human exposure; title abbreviated.

    PubMed
  2. 02
    2023 · Human trial

    Triple-Hormone-Receptor Agonist Retatrutide for Obesity - A Phase 2 Trial (opens a new tab)

    Randomized obesity trial with weight, tolerability and heart-rate outcomes.

    PubMed
  3. 03PubMed
  4. 04
    2026 · Human trial

    Efficacy and safety of retatrutide… in people with type 2 diabetes… (TRANSCEND-T2D-1) (opens a new tab)

    Published June 2026; randomized phase 3 trial in 537 adults, measuring HbA1c, weight and adverse events; title abbreviated.

    PubMed
  5. 05
    2025 · Exploratory human trial analysis

    Appetite, eating attitudes, and eating behaviours during treatment with retatrutide in adults with type 2 diabetes: Results of a phase 2 study (opens a new tab)

    Prespecified questionnaire analyses in 275 adults; reported hunger and eating behavior, not direct food-intake measurements.

    PubMed

Literature reviewed October 2026. This is a selected research overview, not an exhaustive systematic review. Published findings do not establish the identity, purity, sterility or suitability of any WYZ batch. For laboratory research only; not for human or veterinary use.

Before you begin

The details behind
the material.

Specifications and storage

Final product specifications and product-specific storage instructions have not been supplied. Review the original documentation and your laboratory’s procedures before obtaining or using the material.

Research use only

For qualified laboratory researchers. Not for human or veterinary use. Product information is not medical advice or a recommendation for personal use.

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