Serious. These medicines may interact and cause very harmful effects. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
When these two medicines are taken together, fluorouracil and medicines that become fluorouracil in the body may cause your liver to process your seizure medicine more slowly.
What might happen:
The blood levels of your seizure medicine may increase and cause toxic effects.
What you should do about this interaction:
Let your healthcare professionals ((e.g. doctor or pharmacist.) know that your are taking these medicines together. If you experience nausea, vomiting, confusion, dizziness, or other symptoms, contact your healthcare professional. It may be necessary to measure the blood levels of your seizure medicine. Your doctor may want to adjust the dose.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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