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* Carbamazepine is principally metabolized by CYP3A4 (also CYP2C8), but is also a potent inducer of CYP1A2, CYP3A4 and UDP-glucuronosyltransferases.
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* Start carbamazepine with a daily dose of 200 mg and increase dose based serum concentration if necessary.* Check lamotrigines effect after 2 weeks of therapy and adapt dose if necessary. <ref name=”medicatiebewaking”> Schalekamp T. et al, Interacties met Psychofarmaca, Stichting Health Base, Houten, 2002. </ref>
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* Abrupt stop of carbamazepine can cause serious lamotrigine rash as lamotrigine levels increase. <ref> {{Pubmed|12648898|Koch HJ et al. Clinically relevant reduction of lamotrigine concentrations by carbamazepine. J Clin Psychiatry 2005;66:400-1}}</ref>
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