it has been shown the prenatal phenytoin administration ( 100 mg kg-1 orally , days 7-19 of pregnancy ) increased serum tryptophan and brain tryptophan , 5-ht and 5-hiaa of rat offspring at 3 days of age but not at 4 , 15 or 21 days of age .
C0031507
phenytoin
C0032961
pregnancy