Drug Interactions

Drug interactions between Depakene and phenobarbital

Results for the following 2 drugs:

Depakene (valproic acid)
phenobarbital

Interactions between your selected drugs

valproic acid ⇔ phenobarbital

Applies to: Depakene (valproic acid) and phenobarbital

MONITOR: Valproate may increase plasma levels of phenobarbital. The mechanism may be related to decreased CYP450 hepatic metabolism of the barbiturate.

MANAGEMENT: Patients started on combination therapy should be closely monitored for clinical and laboratory evidence of toxicity. They should be advised to notify their physician if they experience excessive sedation or lethargy. Reductions in the phenobarbital dosage may be required.

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