sub:assertion { d:DB00661dv:ddi-interactor-indr:DB00661_DB01174 . d:DB01174dv:ddi-interactor-indr:DB00661_DB01174 . dr:DB00661_DB01174dcterms:identifier "drugbank_resource:DB00661_DB01174" ; dcterms:title "DDI between Verapamil and Phenobarbital - Phenobarbital, a CYP3A4 inducer, may increase the serum concentration of Verapamil, a CYP3A4 substrate. Monitor for changes in the therapeutic/adverse effects of Verapamil if Phenobarbital is initiated, discontinued or dose changed."@en ; adv:Drug-Drug-Interaction ; rdfs:label "DDI between Verapamil and Phenobarbital - Phenobarbital, a CYP3A4 inducer, may increase the serum concentration of Verapamil, a CYP3A4 substrate. Monitor for changes in the therapeutic/adverse effects of Verapamil if Phenobarbital is initiated, discontinued or dose changed. [drugbank_resource:DB00661_DB01174]"@en . }