I am on 150 mg 2 times a day. But I am also on lithium (600mgx2), risperidone (2mgx2), halcion (.25 at bedtime for sleep), vyvanse (50 mg 1xday), and for my thyroid synthroid and cytomel. So I can't really isolate one medication and say it is causing my cognitive issues - it could be lithium, lamictal or risperidone and is probably the combination of the 3. On top of that I can't discern what is due to medication and what is due to the depression. I am just curious what those who are on less of a combination of drugs experiences have been with the lamictal. Thanks for responding.