TheraRadar

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Data updated: Mar 10, 2026

AVONEX

INTERFERON BETA-1A
Neurology Approved 1996-05-17

AVONEX (interferon beta-1a) is an interferon beta indicated for the treatment of relapsing forms of multiple sclerosis (MS) in adult patients. The therapy is used to manage various stages of the disease, including clinically isolated syndrome and relapsing-remitting disease. It is also indicated for patients with active secondary progressive disease. As a member of the interferon beta class, it serves as a therapeutic option for adults experiencing these specific relapsing forms of MS.

Source: FDA Label • Biogen • Interferon beta

How AVONEX Works

AVONEX is classified as an interferon beta. The specific mechanism of action by which the drug exerts its therapeutic effects in patients with multiple sclerosis is currently unknown. While the drug is used to treat relapsing forms of the disease, the precise biological pathways involved in its efficacy have not been established.

Source: FDA Label
5
Indications
--
Phase 3 Trials
1
Priority Reviews
29
Years on Market

Details

Status
Prescription
First Approved
1996-05-17
Routes
N/A
Dosage Forms
VIAL

Companies

Active Ingredient: INTERFERON BETA-1A

AVONEX Approval History

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What AVONEX Treats

1 indications

AVONEX is approved for 1 conditions since its original approval in 1996. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Multiple Sclerosis
Source: FDA Label

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

AVONEX FDA Label Details

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Indications & Usage

FDA Label (PDF)

AVONEX is indicated for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults. AVONEX is for the treatment of relapsing forms of multiple sclerosis (MS), to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.