I'm wondering how long it usually takes for a change of dosage to kick in with Keppra. I was on 2000mg BID and the neuro added Lamictal. I started having a lot of emotional/mental issues and the dr thinks it might be the side effects of Keppra so he is weaning me off. I'm am decreasing my keppra dose by half a pill BID every week while increasing my lamictal 25mg BID every week. I felt great the first two weeks but this week (I'm down to 1000mg BID of Keppra) I have started having space out episodes, confusion, eyeballs bouncing around and a lot of ringing in my ears. In the past when this has happened they have always increased my Keppra. My question is which dose do you think is causing me to have episodes again, the dose I'm taking this week or could it be catching up with my lowered dose from the beginning? I know this is kind of confusing but any help with this would be appreciated. I could call my neuro but I begged him to do this and I'd like to hear others opinion before I hear a big "I told you so" from the dr.