I've experienced some vertigo, brief memory lapses and few brief episodes of disorientation. I think it's maybe due to Arimidex (fuzzy brain). I've been using Arimidex for 19 months. Onco prescribed Lamictin. What the tablet is used for and it's side effects are SCARY! Do I continue with it? I am not suffering from any bi-polar disorder or depression. Correct meds to use?