AVONEX® (interferon beta-1a)
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Established treatment

AVONEX® (interferon beta-1a) is a once-a-week injectable treatment for relapsing multiple sclerosis (MS). It has been prescribed to over 450,000 people since its approval in 1996. AVONEX decreases the number of relapses, slows the progression of physical disability, and reduces brain lesions on magnetic resonance imaging (MRI).

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Ongoing support

The Above MSTM program from Biogen is here for you with tips, tools, and information for your relapsing MS—and so much more. Services include access to Nurse Educators, one-on-one MS support over the phone, and financial support when you need it.

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Considering other options?

You may be interested in hearing about another relapsing MS treatment from Biogen that could fit your needs.

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Important Safety Information and Indication

AVONEX can cause serious side effects. Tell your healthcare provider right away if you have any of the symptoms listed below while taking AVONEX.

Indication

AVONEX (interferon beta-1a) is approved by FDA to treat relapsing forms of multiple sclerosis (MS) to decrease the number of flare-ups and slow the occurrence of some of the physical disability that is common in people with MS. AVONEX is approved for use in people who have experienced a first attack and have lesions consistent with MS on their MRI.

Important Safety Information

Before beginning treatment, you should discuss with your healthcare provider the potential benefits and risks associated with AVONEX.

AVONEX can cause serious side effects. Tell your healthcare provider right away if you have any of the symptoms listed below while taking AVONEX.

AVONEX will not cure your MS but may decrease the number of flare-ups of the disease and slow the occurrence of some of the physical disability that is common in people with MS. MS is a life-long disease that affects your nervous system by destroying the protective covering (myelin) that surrounds your nerve fibers.

The way AVONEX works in MS is not known. It is not known if AVONEX is safe and effective in children.

Do not take AVONEX if you are allergic to interferon beta, albumin (human), or any of the ingredients in AVONEX.

Before taking AVONEX, tell your healthcare provider if you:

Tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.

AVONEX can cause serious side effects including:

Tell your healthcare provider right away if you have any of the symptoms listed above.

The most common side effects of AVONEX include:

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Please see the full Prescribing Information and Medication Guide for additional important safety information. This information is not intended to replace discussions with your healthcare provider.

Indication

AVONEX (interferon beta-1a) is approved by FDA to treat relapsing forms of multiple sclerosis (MS) to decrease the number of flare-ups and slow the occurrence of some of the physical disability that is common in people with MS. AVONEX is approved for use in people who have experienced a first attack and have lesions consistent with MS on their MRI.