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Because solifenacin is a substrate of CYP3A4, inducers or inhibitors of CYP3A4 (e.g., ketoconazole, itraconazole, and erythromycin) may alter solifenacin pharmacokinetics.

Drug Criteria & Outcomes: Solifenacin succinate (Vesicare) Formulary Evaluation

Because solifenacin is a substrate of CYP3A4, inducers or inhibitors of CYP3A4 (e.g., ketoconazole, itraconazole, and erythromycin) may alter solifenacin pharmacokinetics.