I have had migraines for years. They have always been controlled by 250mg daily of Depakote until 11/2012 when the headaches escalated to a new degree with trips to the ER with seizures. I have had a headache about everyday for the last six months and two weeks ago my neurologist started me on topamax, 25mg first week, now I am on 50 m, headaches some better but my balance is terrible and I have severe gastro problems, does this all get better and how long does it take