Exenatide API Suppliers & Bulk Manufacturers

Available Forms: API (drug substance)

Available Strengths: Supplied to an in-house or pharmacopoeial specification

Reference Brands: Byetta, Bydureon

Category: Active Pharmaceutical Ingredient

Exenatide is a 39-amino-acid GLP-1 receptor agonist peptide used in injectable diabetes products. It is sourced by peptide formulators, CDMOs and generic R&D teams.

Product Description:

Exenatide is a synthetic 39-amino-acid peptide, first identified in the saliva of the Gila monster, that activates the GLP-1 receptor; it increases glucose-dependent insulin release, reduces glucagon and slows stomach emptying. It is approved as an add-on to diet and exercise to improve blood sugar control in adults with type 2 diabetes, in immediate-release and extended-release injectable forms (reference brand: Byetta, Bydureon).

Specification at a glance

Regulatory files and timing

The FDA list of Drug Master Files (third quarter 2026) shows 7 active Type II API DMFs for this molecule. Few filings usually means few qualified sources, so early contact with suppliers pays off. For Europe, ask whether the supplier holds a CEP or an EU ASMF and, for imports into the EU, a written confirmation.

Generic or biosimilar entry. United States: Generics/biosimilars on the market (Apr 2025). European Union: No confirmed date.

Handling and quality points

Exenatide is made by solid-phase peptide synthesis, so watch for deletion sequences, racemised residues, methionine oxidation, asparagine deamidation and aggregates, all of which should be compared with the reference product. Store it frozen or refrigerated, protected from moisture, and ship under temperature control. For extended-release microsphere products, discuss the counter-ion and residual solvents with the supplier, as they can affect encapsulation and release.

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Brand names are trademarks of their respective owners and identify the reference medicine only. Information is general and was checked in October 2026; confirm specifications and filings with the supplier before purchase.