of the total pr daily dose , 42.3 % ( 15.2 % to 65.9 % ) was recovered as unchanged drug , 45.2 % ( 16.3 % to 65.3 % ) as phenylethylmalonamide ( pema ) , and 4.9 % ( 1.1 % to 8.0 % ) as phenobarbital ( pb ) .
C0033148
pr
C0031412
phenobarbital