Glucagon-like peptide-1 (GLP-1) receptor agonist; synthetic exendin-4
Exenatide
Approvedaka Byetta, Bydureon, exendin-4
Exenatide is an approved GLP-1 therapy for type 2 diabetes and was the first drug in its class. It is a synthetic form of exendin-4, a peptide originally identified in the saliva of the Gila monster, that shares partial sequence homology with human GLP-1. Immediate-release (Byetta) and once-weekly extended-release (Bydureon) formulations lower HbA1c and body weight; the EXSCEL cardiovascular outcomes trial found it did not increase cardiovascular risk. In recent years the originator has discontinued supply of some exenatide formulations in certain markets.
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Mechanism
In plain terms, exenatide mimics a gut-hormone-like peptide that lowers blood sugar and reduces appetite. Technically, it is a synthetic exendin-4 that agonizes the GLP-1 receptor while resisting degradation by the enzyme DPP-4, stimulating glucose-dependent insulin secretion, suppressing glucagon, slowing gastric emptying, and promoting satiety. The extended-release formulation encapsulates exenatide in biodegradable microspheres to allow once-weekly dosing.
Regulatory Status by Region
- United States (FDA)Approved. Byetta (exenatide twice daily) for type 2 diabetes (2005), the first GLP-1 receptor agonist approved, and Bydureon (extended-release, once weekly) (2012).
- Australia (TGA)Registered on the ARTG for type 2 diabetes, available on prescription.
- European Union (EMA)Authorized: Byetta (2006) and Bydureon (2011) for type 2 diabetes.
- WADANot prohibited. GLP-1 receptor agonists are not on the WADA Prohibited List and are not banned substances.
Key Studies
- Effects of Once-Weekly Exenatide on Cardiovascular Outcomes in Type 2 Diabetes (EXSCEL; Holman et al.) (opens in a new tab) (N Engl J Med 2017;377:1228-1239; DOI 10.1056/NEJMoa1612917; PMID 28910237)
- Exenatide once weekly versus twice daily for the treatment of type 2 diabetes (DURATION-1; Drucker et al.) (opens in a new tab) (Lancet 2008;372:1240-1250)
Related Clinical Trials
- Comparison of [68Ga]Ga-HBED-CC-PEG6-Exendin-4 and [68Ga]Ga-HBED-CC-Exendin-4 PET/CT for Insulinoma LocalizationN/A · Recruiting
- Determination of Resistance Training Status for Patients on Glucagon-Like Peptide-1 Receptor AgonistsN/A · Recruiting
- Targeting Agonists of Glucagon-like Peptide-1 Receptor for Multiple SclerosisPhase 2 · Recruiting
- A Single-Center, Open-Label, Single Ascending Dose Study of Exenatide Circular RNA-Lipid Nanoparticle Injection (CR059) in Chinese Subjects With Type 2 Diabetes MellitusEARLY_Phase 1 · Recruiting
- Using Secondary Data to Evaluate Sex-based Heterogeneity of GLP-1 Agonists and SGLT2 Inhibitors on Cardiovascular-Kidney-Metabolic Health (CKMH) Outcomes in Real-world Settings (DASH-CKMH)N/A · Active Not Recruiting
- Assessment of Safety, Tolerability and Drug Levels of Exenatide ImplantPhase 1 · Completed
- Food (Poly)Phenol Metabotypes and Beta-cell Mass and Function.N/A · Recruiting
- A Pan-European Post-Authorisation Safety Study: Risk of Pancreatic Cancer Among Type 2 Diabetes Patients Who Initiated Exenatide as Compared With Those Who Initiated Other Non-Glucagon-Like Peptide 1 Receptor Agonists Based Glucose Lowering DrugsN/A · Recruiting
Related News & Research
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- This Week in Peptide Research: Mitochondrial Peptides, a Bone Density Study After Knee Replacement, and a Quiet Week for GLP-1 Trials
- This Week in Peptide Research: GLP-1 Mechanism Studies, LL-37 Engineering Advances, and Kisspeptin's Reach Beyond Reproduction
- This Week in Peptide Research: An Online-Sourced Retatrutide Safety Case, Tissue-Repair Reviews, and Mitochondrial Peptide Studies
- Large Matched-Cohort Study Finds Modest Retinopathy Risk With GLP-1 Drugs, No Significant Link to Rare Optic Nerve Disorder
Latest research
- β-Cell Mass and Function, Pancreatic Volume, and Fat Differences Between Short- and Long-Duration Type 1 Diabetes: A Detailed PET/CT Imaging Study. (opens in a new tab)
Journal of nuclear medicine : official publication, Society of Nuclear Medicine · Oct 8, 2026
- Reply: Genetically proxied GLP1R expression does not predict exenatide response in the Exenatide-PD3 trial. (opens in a new tab)
Brain : a journal of neurology · Oct 5, 2026
- Genetically proxied GLP1R expression does not predict exenatide response in the Exenatide-PD3 trial. (opens in a new tab)
Brain : a journal of neurology · Oct 5, 2026
Common Questions
- What is Exenatide?
- Exenatide is a GLP-1 receptor agonist and a synthetic version of exendin-4, marketed as Byetta (twice daily) and Bydureon (extended-release, once weekly) for type 2 diabetes. It was the first GLP-1 receptor agonist approved (FDA 2005) and is EMA-authorized and TGA-registered; its cardiovascular safety was evaluated in the EXSCEL trial. It is a prescription medicine.
- Is Exenatide approved for medical use?
- Exenatide is approved for one or more medical uses in at least one major jurisdiction. United States (FDA): Approved. Byetta (exenatide twice daily) for type 2 diabetes (2005), the first GLP-1 receptor agonist approved, and Bydureon (extended-release, once weekly) (2012). European Union (EMA): Authorized: Byetta (2006) and Bydureon (2011) for type 2 diabetes. Australia (TGA): Registered on the ARTG for type 2 diabetes, available on prescription.
- How does Exenatide work?
- In plain terms, exenatide mimics a gut-hormone-like peptide that lowers blood sugar and reduces appetite. Technically, it is a synthetic exendin-4 that agonizes the GLP-1 receptor while resisting degradation by the enzyme DPP-4, stimulating glucose-dependent insulin secretion, suppressing glucagon, slowing gastric emptying, and promoting satiety.
- Is Exenatide legal in Australia?
- Exenatide in Australia (TGA): Registered on the ARTG for type 2 diabetes, available on prescription.
- Is Exenatide banned in sport?
- Exenatide under the World Anti-Doping Agency (WADA) code: Not prohibited. GLP-1 receptor agonists are not on the WADA Prohibited List and are not banned substances.