Vesinac 5 Solifenacin Succinate Ketoconazole
ModerateKetoconazole is a strong blocker of the CYP3A4 enzyme, which is one of the main ways the body breaks down Solifenacin. When both are taken together, Solifenacin stays in the body at higher levels. At a Ketoconazole dose of 200 mg a day, the AUC (the total amount of Solifenacin in the blood over time) of Solifenacin doubles. At 400 mg a day, the AUC rises to three times the usual level.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.