Hi,
I was on Olanzapine until recently, and that made me gain about forty pounds
in a year. That was bad. Now, on Lamictal (still on
Olanzapine as well as a buffer while I break into Lamictal), I have found that my appetite has decreased significantly. I was able to lose some weight, and hopefully will lose some more over the next few months with a healthy diet and the right exercise. I don't think its anything abnormal, but if you are concerned, please talk to your doctor about it.