CONSIDERATIONS TO KNOW ABOUT PHENOBARBITAL HUND VETPHARM

5. Phenytoin, sodium valproate, valproic acid: The effect of phenobarbital to the metabolism of phenytoin appears to get variable. Some investigators report an accelerating effect, though others report no effect. As the effect of phenobarbital over the metabolism of phenytoin is not predictable, phenytoin and phenobarbital blood levels ought to be