My daughter took Neuotin for Migrain headaches for a year and a half. She started out with 100 mg and gradully increased until she was taking 1200 mg at bedtime. It helped her to sleep at night and was to block something in her brain that triggered migrains. A friend who works in a doctors office told her to be careful with it and asked if they ever tested her blood? The neuologist had never taken a blood sample from her, so she called him and asked if she could get off it now, as she seldom had migrains. She's been off it for 3 months now and so far, so good. Her friend said it can do damage to the liver.