Many anticonvulsants cause increased metabolism of vitamin D and folic acid, particularly those that are metabolized through the cytochrome P-450 hepatic enzymne (sp?) subsystem. This is probably the reason why your student was assigned this problem. I would love to know the answer when she finds it. -- Catherine Watson Genna, IBCLC New York City mailto:[log in to unmask] *********************************************** The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(TM) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html