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Type moodstabilizer
Group anticonvulsant
ATC-code N03AF01
Medscape Carbamazepine
PubChem 2554
PubMed Carbamazepine carbamazepine
Kompas (Dutch) Carbamazepine
Wikipedia Carbamazepine
Type moodstabilizer
Group anticonvulsant
ATC-code N03AX09
PubChem 3878
PubMed Lamotrigine lamotrigine
Kompas (Dutch) Lamotrigine
Wikipedia Lamotrigine

Adding lamotrigine to carbamazepine.

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General information
  • Carbamazepine is principally metabolized by CYP3A4, and is a potent inducer of CYP1A2, CYP2C9, CYP3A4 and UDP-glucuronosyltransferases.
  • Lamotrigine is principally metabolised by UDP-glucuronosyltransferases.


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Start lamotrigine
  • Add lamotrigine according to the general dosing advice. Dose adjustment of carbamazepine is not necessary when lamotrigine is added.[6] [7]
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  • Abrupt stop of carbamazepine can cause serious lamotrigine rash as lamotrigine levels increase.[8]
  • Carbamazepine likely speeds the metabolism of lamotrigine, but the clinical significance is unclear.[6][9]
  • Lamotrigine may increase blood levels of carbamazepine metabolites, which can result in neurotoxicity (data about this are contradictory).[6][9]
  • These two agents have less significant pharmacologic interactions than do lamotrigine and valproate.[6][9]

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