A side effect associated with the use of some antiepileptic drugs (AEDs) is
change in body weight. To evaluate the effect of lamotrigine on body weigh
t in adult patients with epilepsy, we conducted a retrospective review of d
ata from 463 patients treated with lamotrigine in 32 clinical trials. Mean
daily dose was 259 (+/-155) mg and duration of therapy was 318 (+/-87) days
. The mean change in body weight was 0.5 (+/-5) kg. Lamotrigine was associa
ted with stable body weight in patients with epilepsy.