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Avonex Pen

Interferon Beta-1A

What is Avonex Pen used for?

This medication is used to treat multiple sclerosis (MS). Interferon is not a cure for MS, but it may help to slow disease worsening and decrease flare-ups of symptoms (such as balance problems, numbness, or weakness).


Interferon Beta-1A


Multiple Sclerosis
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Avonex Pen Frequently Asked Questions

Read the Medication Guide and Instructions for Use provided by your pharmacist before you start using interferon beta-1A and each time you get a refill. If you have any questions, ask your doctor or pharmacist.

If you are using this medication at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely.

To increase comfort, remove this medication from the refrigerator and let it warm to room temperature for about 30 minutes before injecting. Do not warm up this medication in any other way such as heating in the microwave or placing in hot water.

Inject this medication into a muscle as directed by your doctor, usually once a week. It is best to use this medication near bedtime to reduce side effects.

Before injecting each dose, clean the injection site with rubbing alcohol. Change the injection site each time to lessen injury. Do not inject into skin that is red, sore, scarred, or infected. If you are using the prefilled syringe, inject this medication into the thigh or upper arm as directed by your doctor. If you are using the autoinjector, inject into the upper outer thigh as directed. Tell your doctor of any skin reactions that do not go away after a few days.

The dosage is based on your medical condition and response to treatment. To reduce your risk of side effects, your doctor may direct you to start this medication at a low dose and gradually increase your dose. Follow your doctor's instructions carefully. Use this medication regularly to get the most benefit from it. To help you remember, use it on the same day each week.

Tell your doctor if your condition gets worse.

IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.

Avonex Pen Dosage and Form Information

Pen Injector Kit