* Start carbamazepine with a daily dose of 200 mg and increase dose based on serum concentration if necessary. Check lamotrigine 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> <ref name="drugscomint">{{Drugscominteract|lamotrigine-with-carbamazepine-1430-0-497-0|lamotrigine|carbamazepine}}</ref>| cave = {{CombiCaLa}}