A patient on carbamazepine for bipolar disorder develops diplopia, ataxia, and elevated carbamazepine levels despite no dose change. What is the most likely explanation?
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A
Carbamazepine autoinduction of CYP3A4 has reversed
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B
A new drug inhibited CYP3A4, raising carbamazepine levels
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C
Renal failure reduced carbamazepine clearance
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D
The patient developed carbamazepine-induced hypothyroidism