serum concentrations of 25-hydroxyvitamin d ( 25-ohd ) , 24,25-dihydroxyvitamin d [ 24,25- ( oh ) 2d ] , and 1 alpha , 25-dihydroxyvitamin d [ 1 , 25- ( oh ) 2d ] were measured in 30 ambulatory adult epileptic patients during long-term anticonvulsant treatment with phenytoin , phenobarbital , or carbamazepine .
C0014544
epileptic
C0031507
phenytoin