The article “Medications for Migraine Prophylaxis” (January 1, 2006, page72) contained an error in the section titled “Pregnancy” on page77. The second sentence of this section incorrectly listed fluoxetine (Prozac) as a U.S. Food and Drug Administration (FDA) pregnancy category B drug, and that it could be considered for preventive therapy of chronic migraine in women who are pregnant. In March 1997, the FDA reclassified fluoxetine as a pregnancy category C drug, and it should be used with the same caution as all pregnancy category C drugs in women who are pregnant. The online version of this article has been corrected.