Exenatide
A GLP-1 receptor agonist derived from Gila monster venom (exendin-4).
Also known as Byetta, Bydureon.
A lizard's venom turned out to hold a durable copy of a human sentence. The class began as a loan from another species.
Identity
- Class
- GLP-1 receptor agonist (exendin-4, 39 aa)
- Source
- Synthetic exendin-4; originally from Gila monster venom
- Receptor
- GLP-1 receptor (GLP-1R)
Key properties
Evidence floorClinicalREF1CLIN1Approximate values for the native hormone; engineered analogs are often deliberately larger and far longer-acting. Each figure carries its own provenance tier, and the floor is the weakest of them - the Standard.
Mechanism
Exenatide is the synthetic form of exendin-4, a peptide from Gila monster venom that fully activates GLP-1R but — unlike human GLP-1 — is naturally resistant to DPP-4. That built-in resistance gives a far longer half-life than native GLP-1 without any acylation.
Reference notes
- Exendin-4's natural DPP-4 resistance is the discovery that made long-acting GLP-1 therapy feasible.
- Shares only ~53% identity with human GLP-1 yet fully activates the receptor.
- Available in immediate-release and extended-release (microsphere) formulations.
Common questions
- What is Exenatide?
- A GLP-1 receptor agonist derived from Gila monster venom (exendin-4). Structurally it is GLP-1 receptor agonist (exendin-4, 39 aa).
- How does Exenatide work?
- Exenatide is the synthetic form of exendin-4, a peptide from Gila monster venom that fully activates GLP-1R but — unlike human GLP-1 — is naturally resistant to DPP-4. That built-in resistance gives a far longer half-life than native GLP-1 without any acylation.
- How strong is the evidence for Exenatide?
- PeptideHormone grades Exenatide at the "Established" evidence tier — its mechanism and core effects are settled across the peer-reviewed literature. It is catalogued as an engineered analog built on an endogenous hormone, and the tier is an editorial judgment about the public literature that can change as the science does.
- What is the half-life of Exenatide?
- The reported circulating half-life of Exenatide is ~2.4 h (immediate-release).
- Is Exenatide the same as Byetta or Bydureon?
- Byetta, and Bydureon are brand names of Exenatide — the same molecule in different approved presentations. This page is the molecule reference, not a prescribing guide.
Selected literature
Curated peer-reviewed reviews, sourced from PubMed. Selected for relevance, not exhaustive — open any entry on PubMed for the full record and its primary citations.
- 1.GLP-1 receptor agonists in the treatment of type 2 diabetes - state-of-the-art · Molecular metabolism, 2021 · PMID 33068776
- 2.Emerging Role of GLP-1 Agonists in Obesity: A Comprehensive Review of Randomised Controlled Trials · International journal of molecular sciences, 2023 · PMID 37445623
External references
Exenatide in the public knowledge graph — the same entity resolved across the authoritative chemistry and protein databases.