the mean peak time after phenobarbital sodium ( 0.92 hr ) was significantly ( p less than 0.01 ) shorter than that after phenobarbital acid ( 5.83 hr ) , whereas the mean peak levels ( 16.2 vs 13.8 microgram/ml ) did not reach statistical difference ( p less than 0.2 ) between both dosage forms .
C0282303
phenobarbital sodium
C0031412
phenobarbital