I recently lost my insurance and have been on Keppra and generic Keppra for the last six years.  So far I haven't really had any problems with it but my dosage was recently elevated due to memory loss.  After speaking with my doctor, through his nurse, and informing him that I can no longer afford Keppra he is changing my prescription to Dilantin.  Of course I will have a month of adjustment, but I am a little concerned about the transition.  I have had previous discussions with him where he warned me that changing my medication from one that was working was an unwise idea.  I know he is doing because of the extreme price difference, but I am worried about any side effects or if it will work as well.  Has anyone made this transition previously and if so did it work out okay?