I am bipolar 1 effectively stabilised and functioning normally for the last 18 years. However, I found it beneficial to be on one mood stabiliser and one atypical antipsychotic. Eight months back I changed valproate in favor of eslicarbamazepine. The principal reason for changing over was valproate induced substantial weight gain . However eslicarbamazepine does the same in my case though the literature says that the average weight gain is insignificant. I am left with two choices - lamotrigine and oxcarbamazepine. The literature on both say weight gain is insignificant. In addition, are there any other drugs I could consider trying out ? I have had good results as far as the quality of the mood is concerned with Invega Sustenna.
My history is mainly one of hypomania episodes. Could you suggest a drug for such a profile. Of the two - lamotrigine or oxcarbazepine - which one should I try out first?