AVONEX® (interferon beta-1a)

Treat Your Relapsing MS with AVONEX

Is once-a-week dosing right for your schedule?

Living with relapsing multiple sclerosis (relapsing MS) requires a treatment plan that you and your healthcare provider decide on. When you choose once-a-week AVONEX, you have access to the AVONEX PEN as well as our full array of support services.

Ready to make the switch?

See why in a survey of people taking AVONEX who participated in a clinical study (n=74), 9 out of 10 preferred AVONEX PEN to AVONEX Prefilled Syringe. AVONEX PEN is a prefilled, single-use autoinjector that lets you treat your relapsing MS with a single click once a week. Learn how to switch to AVONEX PEN now… More

About AVONEX

AVONEX is a form of protein called interferon beta-1a. See how AVONEX can help delay the progression of physical disability when you have relapsing MS… More

Biogen Idec Support

In addition to a range of relapsing MS treatments, Biogen Idec offers an array of support services for you and your care partner(s) as well. This includes financial assistance, MS-trained nurse educator training, and beyond… More

$0 Copay Program from Biogen Idec*

When you enroll in the $0 Copay Program from Biogen Idec, you'll pay $0 a month for your relapsing MS treatment.

See if you're eligible

Did you know?

AVONEX is FDA approved to help reduce flare-ups and slow the progression of physical disability, even if you have only had one flare-up.

Learn more

MS ActiveSource® Support Services

From nurse led training to insurance assistance and numerous ways to save on your treatment, see what MS ActiveSource has to offer.

Watch the video

* Depending on your income or, in some cases, if your medication is obtained from an out-of-network provider, there may be an annual cap that limits the amount of assistance that you can receive over one year. Additional restrictions apply.

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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.