After 1 week. I experienced moods that I had never encountered before. I had extreme irritability and dark thoughts. I wanted to get rid of my pets. Hated my kids, and hated everything. People at work or on TV, I felt like killing them. I felt like a walking time bomb serial killer. I immediately stopped taking the Lamictal after 1 week. I could tell a difference by the next day. I was still depressed but not suicidal or full of hate that I experienced on the Lamictal. This type of side effect can happen with any mood stabilizers or anti depressant type drugs. I'm glad I knew this, or I would have killed my pets, family and myself.