Serum protein binding and free concentration of phenytoin and phenobarbitone in pregnancy.

Article date: April 1982

By: SS Chen, E Perucca, JN Lee, A Richens, in Volume 13, Issue 4, pages 547-552

1 The effect of pregnancy on the binding of phenytoin and phenobarbitone to serum proteins was studied in normal women and in drug treated epileptic women. 2 The binding of both drugs was reduced during pregnancy. The reduction correlated positively with the gestational age and negatively with the serum albumin concentration. 3 In spite of the increase in unbound fraction, both the total and free serum concentrations of phenytoin were decreased in late pregnancy.

DOI: 10.1111/j.1365-2125.1982.tb01420.x

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