Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.
How the interaction occurs:
When these two medicines are taken together, your body may process carbamazepine more slowly. You may also process valproic acid more quickly.
What might happen:
Your blood levels of carbamazepine may increase and cause toxic effects. Your blood levels of valproic acid may decrease and cause seizures.
What you should do about this interaction:
If you experience confusion, fever, tremors, mental or mood changes, weakness, seizures, or other symptoms, contact your doctor. It may be necessary to change your dose of one or both medicines. Your doctor may also want to measure your blood levels of these medicines more often.Your healthcare professionals (e.g. doctor or pharmacist) 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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