Home › Moderate Interactions › Phenytoin & Phenobarbital
MODERATE

Phenytoin and Phenobarbital Interaction

Phenytoin increases the concentration of Phenobarbital and Phenobarbital affects the concentration of Phenytoin. Manufacturer advises monitor concentrations of both drugs.

Evidence: Study
View all Phenytoin interactions View all Phenobarbital interactions

Other Phenytoin Interactions

Other Phenobarbital Interactions

    Check interactions for your patient's full medication list

    InteractRx checks all drug combinations at once — built for GP surgery pharmacists.

    Use the Free Checker