Hi, welcome to healing well we are happy to have you join us here. Lamictal is normally prescibed for Bipolar disorder as is Lithium which is an antipsychotic medication. Topamax is prescribed for migraines and not normally given for psychiatric disorders. Though it can help with weight loss too and has been proven to have many other side benefits as well. We have a forum here that may help you I will leave the link below for you it is to the bipolar forum, I do know that there are several people that post there that take Lamictal and can answer you questions. I will also cross post this so you can just click on the link to get there. Take care.
https://www.healingwell.com/community/default.aspx?f=13&m=697803
http://www.lamictal.com/
http://www.topamax.com