I have been on Trileptal for several years. It's been much better for me than lamictal was. It's weight neutral and I haven't had side effects other than when I majorly upped it quickly once when I got mixed, but it only lasted a couple days.

As another person has I think mentioned, it can lower your sodium. I used to take 1500mg but had to cut it down to 750mg due to this issue. So if you take a fair amount of it, consider salting your food more.