sub:assertion { d:DB00252dv:ddi-interactor-indr:DB00252_DB00661 . d:DB00661dv:ddi-interactor-indr:DB00252_DB00661 . dr:DB00252_DB00661dcterms:identifier "drugbank_resource:DB00252_DB00661" ; dcterms:title "DDI between Phenytoin and Verapamil - Verapamil may increase the serum concentration of Phenytoin by decreasing its metabolism. Monitor for changes in the therapeutic/adverse effects of Phenytoin if Verapamil is initiated, discontinued or dose changed."@en ; adv:Drug-Drug-Interaction ; rdfs:label "DDI between Phenytoin and Verapamil - Verapamil may increase the serum concentration of Phenytoin by decreasing its metabolism. Monitor for changes in the therapeutic/adverse effects of Phenytoin if Verapamil is initiated, discontinued or dose changed. [drugbank_resource:DB00252_DB00661]"@en . }