the following half-life values were observed : antipyrine 5,7 +/- 1,9 hours , phenytoin 15,9 +/- 7,9 hours , phenobarbitone 63,0 +/- 18,2 hours , and phenytoin after 1 month of phenobarbitone therapy 31,5 +/- 11,9 hours .
C0031412
phenobarbitone
C1875648
phenytoin