Avonex® is a medication that is commonly used for the treatment of multiple sclerosis. It is believed to work by limiting the immune system from attacking and destroying the protective coating around nerve fibers. Avonex is available by prescription and is injected into a muscle once weekly. Side effects that have been reported with Avonex include pain, fever, chills, and flu-like symptoms.
(Click Avonex for more information on the effects of Avonex, how and when to inject the medication, and what you should be aware of before starting treatment.)