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You may wish to consult with your neurologist. There could be medications that can help with your shooting pains. As far as your question on whether or not you should switch from Avonex to another medication, I can't answer that directly. However, people on interferon-beta sometimes develop neutral...

I have been on Avonex for 4 years. Do you get to a point when you need to change meds? For the past month I have such horrible shooting pains up and down arms and legs and I have been extremely exhusted.

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I have been on Avonex for 4 years. Do you get to a point when you need to change meds? For the past month I have such horrible shooting pains up and down arms and legs and I have been extremely exhusted.