![](#sarah-huckabee-sander-john-bolton-sh-ml-180516_hpmain_16x9t_240.jpg)
david dodick, md, neurologist, mayo clinic; chairman, american migraine foundation.
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november 17, 2014
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OFF DEAL
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one downside to existing drugs that prevent migraine is they can cause unpleasant side effects like .
david dodick, md, neurologist, mayo clinic; chairman, american migraine foundation.
.
.
.
november 17, 2014
.
218 Used Today