How the interaction occurs:
Fluconazole and ketoconazole may slow down how quickly your liver processes carbamazepine.Carbamazepine may speed up how quickly your liver processes itraconazole.
What might happen:
If you take fluconazole or ketoconazole with your carbamazepine, the amount of carbamazepine in your blood may increase and it may cause toxic side effects such as drowsiness, dizziness, blurred vision, or loss of coordination.If you take itraconazole with your carbamazepine, the amount of itraconazole in your blood may decrease and it may not work as well.
What you should do about this interaction:
Let your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together.If you are taking fluconazole or ketoconazole, your doctor may want to check the amount of carbamazepine in your blood during and after your treatment with fluconazole or ketoconazole. Your doctor may need to change the dose of your carbamazepine during and after your treatment with fluconazole or ketoconazole. Let your doctor know right away if you have any symptoms of carbamazepine toxicity.If you are taking itraconazole, let your doctor know if your condition does not improve or worsens. Your doctor may need to change your antifungal medicine.If you are unsure which antifungal agent you are taking, ask your healthcare professional.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
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