Biogen Idec | Avonex (Medication)


This medication is used to treat multiple sclerosis (MS). Interferon is not a cure for MS, but it may help to decrease the number of attacks of weakness and slow the progression of the disease.

This medicine is usually injected once a week into a muscle or as directed by your doctor. If you are giving this medication to yourself at home, learn all preparation and usage instructions from your health care professional. The solution is normally clear or slightly yellow in color. ...

Side Effect:

Pain, swelling, or redness at the injection site may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Flu-like symptoms such as headache, fatigue, fever, chills, and muscle aches may occur when you first start this medication. These symptoms usually last about a day after the shot and improve or go away after a few months of continued use. You can minimize these side effects by injecting this medicine at bedtime and using fever reducers/pain relievers such as acetaminophen or ibuprofen before each dose. ...


Before using interferon, tell your doctor or pharmacist if you are allergic to interferon beta-1a or to products containing human albumin; or if you have any other allergies.

There is a risk of contracting a virus from using this medication because it contains albumin from human blood.

Before using this medication, tell your doctor or pharmacist your medical history, especially of:mental/mood disorders (e. g. , depression, psychosis, suicidal thoughts), heart disease (e. g. , angina, congestive heart failure, arrhythmia), seizures, thyroid disease, liver disease, decreased bone marrow function.

During pregnancy and breastfeeding is not recommended to use this medicine without your doctor's advice. ...